What is Calvin Hall's NPI number?

Calvin Hall's National Provider Identifier (NPI) is 1992781702, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Calvin Hall's specialty?

Calvin Hall is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).

Where is Calvin Hall located?

Calvin Hall's practice location on file with NPPES is 2600 S Michigan Ave, Chicago, IL 60616-2857.

What is Calvin Hall's phone number?

The practice phone number listed in the NPPES registry for Calvin Hall is (312) 326-2600.

Does Calvin Hall accept Medicare?

Calvin Hall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Calvin Hall's NPI active?

Yes — Calvin Hall's NPI (1992781702) is active in the NPPES registry as of the last update on 2010-08-13.

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Calvin Hall, MD

NPI 1992781702 · Gastroenterology Physician · Chicago, IL

Calvin Hall, MD is a Gastroenterology Physician provider in Chicago, IL (NPI 1992781702).

Provider details

NPI number: 1992781702
Entity type: Individual
Primary specialty: Gastroenterology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: Yes
License: 036053292 (IL)

Practice location

2600 S Michigan Ave

Suite 403

Chicago, IL 60616-2857

Phone: (312) 326-2600

Fax: (312) 326-2636

Street-level locationGet directions

More IL providers

Mailing address

2600 S Michigan Ave

Chicago, IL 60616-2857

Specialties & taxonomies

Gastroenterology PhysicianPrimary207RG0100XLicense 036053292 (IL)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(66/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
20 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
22 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	22	$133

Typical Medicare-allowed amounts for these services range $133–$133 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.

Drug	Part D claims (2024)	Beneficiaries
Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G	34	33

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Enumerated: 2005-12-22
Last updated: 2010-08-13

Frequently asked questions

What is Calvin Hall's NPI number?: Calvin Hall's National Provider Identifier (NPI) is 1992781702, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Calvin Hall's specialty?: Calvin Hall is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
Where is Calvin Hall located?: Calvin Hall's practice location on file with NPPES is 2600 S Michigan Ave, Chicago, IL 60616-2857.
What is Calvin Hall's phone number?: The practice phone number listed in the NPPES registry for Calvin Hall is (312) 326-2600.
Does Calvin Hall accept Medicare?: Calvin Hall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Calvin Hall's NPI active?: Yes — Calvin Hall's NPI (1992781702) is active in the NPPES registry as of the last update on 2010-08-13.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	22	$133

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.

Drug	Part D claims (2024)	Beneficiaries
Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G	34	33

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)