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Business phone system for physical, occupational and speech therapy clinics in Illinois

2,545 physical, occupational and speech therapy clinics operated in Illinois in 2023. Where they are, how big their teams are, and what phone service costs them.

Establishments
2,545CBP 2023
Employees
24,701mid-March 2023
Per 100k residents
20.0U.S. 15.3
State rank
5th of 51by count

How many physical, occupational and speech therapy clinics operate in Illinois

The Census Bureau counted 2,545 physical, occupational and speech therapy clinics in Illinois in its 2023 County Business Patterns (NAICS 621340). They employed 24,701 people in mid-March and reported $1.2 billion in annual payroll. That is the 5th highest count among the 51 states and DC with published figures. Physical, occupational and speech therapy clinics make up 0.79% of the 322,415 business establishments in the state.

Per 100,000 residents (2024 estimate) Illinois has 20.0 physical, occupational and speech therapy clinics, 30.8% above the national rate of 15.3. The average establishment has 9.7 employees against 9.0 nationally. Payroll per employee is $49,615, in line with the U.S. figure of $49,067.

Physical, occupational and speech therapy clinics: Illinois compared with the U.S., 2023
MeasureIllinoisUnited States
Establishments2,54552,058
Mid-March employees24,701466,903
Annual payroll$1,225,549,000$22,909,546,000
Employees per establishment9.79.0
Payroll per employee$49,615$49,067
Establishments per 100,000 residents20.015.3

Census County Business Patterns 2023 (mid-March employment; annual payroll). Employees and payroll flagged high-noise are shown but not used in the text. Residents: Census Vintage 2024 estimates.

Where physical, occupational and speech therapy clinics in Illinois are concentrated

Census published physical therapy clinic counts for 30 metro or micropolitan areas that include part of Illinois. The largest is Chicago, IL-IN, with 2,101 establishments (a multi-state area; its count covers every state it spans). Single-state metro and micropolitan areas account for 12% of the statewide total; the rest are outside any published area or in areas Census suppressed.

Physical, occupational and speech therapy clinics by metro or micropolitan area, Illinois, 2023
AreaEstablishmentsEmployeesPer 100k residents
Chicago, IL-IN2,10119,05622.3
St. Louis, MO-IL5495,77519.5
Davenport, IA-IL7051218.3
Rockford, IL4329812.8
Peoria, IL4248211.5
Bloomington, IL2619015.1
Springfield, IL2439611.6
Champaign, IL231499.5
Kankakee, IL229320.7
Ottawa, IL20—13.7
Cape Girardeau, MO-IL1917319.2
Quincy, IL-MO1714223.0
Paducah, KY-IL1510814.6
Marion, IL1210217.9
Carbondale, IL116620.7
Decatur, IL9648.9
Effingham, IL92720.0
Freeport, IL9—20.9
Rochelle, IL83015.6
Danville, IL7249.8
Canton, IL6—18.5
Sterling, IL5—9.1
Charleston, IL5—10.8
Pontiac, IL5—14.1
Burlington, IA-IL4—9.0

Top 25 of 30 areas by establishments. Source: Census CBP 2023.

Team sizes at physical, occupational and speech therapy clinics in Illinois

60.4% of Illinois's physical, occupational and speech therapy clinics with employees had fewer than five people in March 2023, compared with 56.8% nationally. 79.8% had fewer than ten. At that size the phone is shared, so routing (who rings, when, and what happens after hours) matters more than the number of desk phones.

Physical, occupational and speech therapy clinics in Illinois by employment size, 2023
Employment sizeEstablishmentsShareU.S. share
1–4 employees1,53660.4%56.8%
5–9 employees49319.4%21.4%
10–19 employees32012.6%14.0%
20–49 employees1445.7%6.0%
50 or more employees502.0%1.8%

Employment-size classes count establishments by mid-March 2023 employment. Establishments with no March employees are excluded from the size classes, so shares are of establishments with employees. Source: Census County Business Patterns 2023.

Calls a physical therapy clinic in Illinois has to catch

Therapy plans of care involve many visits over several weeks, so clinics spend a large share of phone time scheduling and confirming. Referral sources and payers also call to check on authorizations and progress. That holds for physical, occupational and speech therapy clinics in Illinois as much as anywhere.

A few of the calls that come in to physical, occupational and speech therapy clinics in Illinois:

Business texting for physical, occupational and speech therapy clinics

Reminder texts and quick reschedule replies help keep a full schedule full.

Texting from a local number in Illinois requires carrier registration (10DLC), a one-time $49 fee on Callata.

What a phone system costs a physical therapy clinic in Illinois

Physical, occupational and speech therapy clinics in Illinois average 9.7 employees, so the comparison uses a 10-person team. Priced per seat, 10 users would run $300.00 a month on RingCentral RingEX Core and $249.50 on Ooma Office Pro (month-to-month list prices, checked September 28, 2026). Callata comes to $199.00 a month for 10 users ($99 a month with 5 users included, then $20 per additional user), below both.

Over a year, that is $1,212 less than RingCentral for a physical therapy clinic in Illinois of that size. Annual contracts lower some competitors' prices, so compare the plan you would actually sign.

Monthly list price for a 10-person physical therapy clinic
Provider (plan)Pricing basisPer monthPer year
Callata (Callata Office)$99 incl. 5 users, $20 per extra user$199.00$2,388.00
Quo (Starter)$19.00 per user$190.00$2,280.00
Nextiva (Core)$23.00 per user$230.00$2,760.00
Ooma (Office Pro)$24.95 per user$249.50$2,994.00
Dialpad (Standard)$27.00 per user$270.00$3,240.00
RingCentral (RingEX Core)$30.00 per user$300.00$3,600.00

Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.

Area codes in Illinois

Illinois has 17 geographic area codes in service according to NANPA. Callata includes up to 3 local numbers, so a physical therapy clinic can hold a number in more than one of them.

Area codes in Illinois by assigned exchanges
Area codeExchangesTime zoneIn service sinceOverlay with
217786Central1947447
309786Central1957861
618786Central1947730
773786Central1996872
815786Central1947779
847786Central1996224
312784Central1947872
708784Central1989464
630782Central1996331
224594Central2002847
779351Central2007815
872276Central2009312, 773
331224Central2007630
447219Central2021217
730129Central2023618
464111Central2022708
8617Central2023309

Exchanges are NANPA-assigned central office codes (NPA-NXX) in the rate centers matched to the area's named places. Source: NANPA utilized code and NPA reports.

How Callata works for physical, occupational and speech therapy clinics in Illinois

Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.

Porting a number you already use in Illinois is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.

Practices that handle protected health information should review their own privacy obligations before recording calls, enabling AI summaries or texting appointment details, and keep clinical conversations out of text messages unless their policies allow it.

Frequently asked questions

How many physical, occupational and speech therapy clinics are in Illinois?

2,545 in 2023, according to Census County Business Patterns. They employed 24,701 people in mid-March.

Which Illinois metro area has the most physical, occupational and speech therapy clinics?

Chicago, IL-IN, with 2,101 establishments in 2023.

What does a phone system cost a 10-person physical therapy clinic?

$300.00 a month on RingCentral RingEX Core or $249.50 on Ooma Office Pro at month-to-month list prices (checked September 28, 2026); $199.00 on Callata ($99 a month with 5 users included, then $20 per additional user).

Do I need to register to text customers from a Illinois number?

Yes. US carriers require business texting from local numbers to be registered (10DLC). On Callata the registration is a one-time $49 fee, and texting turns on once it is approved.