Dr. Calvin H. Hall Jr., MD
- Medicare services, 2024
- 22
- Medicare patients, 2024
- 41
- Part D claims, 2024
- 109
- Hospital affiliations
- 1
- Medical group
- 1
- Practice address
- 2233 W Division St, Chicago, IL 60622
- Practice phone
- Call (312) 770-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Calvin H. Hall Jr. is a gastroenterologist in Chicago, Illinois
Dr. Hall practices at Saint Mary of Nazareth Hospital in Chicago, Illinois, part of Prime Healthcare Services.
Dr. Hall's NPI, 1992781702, was assigned on December 22, 2005. Dr. Hall graduated from Illinois Medical College in 1979. Dr. Hall holds Illinois license 036053292.
- NPI
- 1992781702NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8628060076
- NPI enumeration date
- December 22, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (312) 770-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 73
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Calvin H. Hall Jr. practices at Saint Mary of Nazareth Hospital in Chicago, Illinois
Dr. Hall's primary practice is Saint Mary of Nazareth Hospital, at 2233 W Division St, Chicago, IL 60622 in Cook County. The practice phone is (312) 770-2000.
- Saint Mary of Nazareth Hospital2233 W Division St, Chicago, IL 60622 · Cook CountyPhone(312) 770-2000
Source: Dmand AI Affiliation Data
Dr. Calvin H. Hall Jr. is affiliated with 1 site of care and 1 medical group
Dr. Hall's primary practice is Saint Mary of Nazareth Hospital in Chicago, Illinois, part of Prime Healthcare Services. The medical group on file is Illinois Dermatology Institute.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Calvin H. Hall Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hall practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Saint Mary of Nazareth Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Calvin H. Hall Jr. is one of 771 gastroenterologists in Illinois
Gastroenterology is Dr. Hall's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Hall is licensed in Illinois.
Specialties and state licenses
- Gastroenterology, IllinoisPrimary
Gastroenterologists near Dr. Hall
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Calvin H. Hall Jr. billed Medicare for 22 services in 2024
CMS data shows 22 Medicare services from Dr. Hall across 1 procedure code in 2024, all of them office visits, for 41 Medicare patients. Medicare paid $2,007 for them. Every service was in an office.
Dr. Hall compared with the Illinois median for gastroenterologists, 2024
- Dr. Hall
- Illinois median
- Medicare services
- 22vs 49896% below
- Medicare patients
- 41vs 30787% below
- Part D claims
- 34vs 37091% below
Medians across 757 gastroenterologists in Illinois with Dmand AI profiles that report each measure.
Dr. Hall's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Calvin H. Hall Jr. treated 41 Medicare patients in 2024, average age 75
CMS counts 41 Medicare patients who saw Dr. Hall in 2024. The largest group is 75 to 84, with 20 patients. 75% of them have high blood pressure, and 61% have high cholesterol. Their average risk score is 1.18, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Hall's median patient age at 73, with 50% women.
Dr. Hall's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Hall's Medicare patients, 2024
- High blood pressure75%
- High cholesterol61%
- Chronic kidney disease39%
- Diabetes29%
- Ischemic heart disease27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hall's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women50%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Calvin H. Hall Jr. wrote 109 Medicare Part D claims in 2024
In 2024, Dr. Hall wrote 109 Medicare Part D claims for 61 patients. 73% of them were for generic drugs. CMS names the drug for 34 of them, across 1 drug with 11 or more claims each, at $588 in total drug cost.
Dr. Hall's Part D claims by kind of drug, 2024
- Generic80 claims73%
- Brand-name29 claims27%
Dr. Hall's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Calvin H. Hall Jr. ranks in the 64th percentile for colonoscopy in Medicare
Dr. Hall accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 51 procedures of colonoscopy by Dr. Hall, more than 64% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Hall ranks in Medicare procedure volume
- Colonoscopy
- 64th percentile51 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 45th percentile14 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Calvin H. Hall Jr. graduated from Illinois Medical College
Dr. Hall graduated from Illinois Medical College in 1979.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Calvin H. Hall Jr.'s profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Calvin H. Hall Jr.
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What is Dr. Calvin H. Hall Jr.'s NPI number?
Dr. Calvin H. Hall Jr.'s NPI number is 1992781702. It was assigned on December 22, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Calvin H. Hall Jr.?
Dr. Calvin H. Hall Jr. is a gastroenterologist in Chicago, Illinois. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Calvin H. Hall Jr. practice?
Dr. Hall practices at 2233 W Division St, Chicago, IL 60622. Dr. Hall's primary practice is Saint Mary of Nazareth Hospital in Chicago, Illinois, part of Prime Healthcare Services.
What is Dr. Calvin H. Hall Jr.'s office phone number?
The practice phone on file for Dr. Hall is (312) 770-2000.
What is Dr. Calvin H. Hall Jr.'s medical license number?
Dr. Hall holds Illinois license 036053292.
Which hospitals is Dr. Calvin H. Hall Jr. affiliated with?
Dr. Hall practices at Saint Mary of Nazareth Hospital in Chicago, Illinois.
What medical group is Dr. Calvin H. Hall Jr. part of?
Dr. Hall is linked to Illinois Dermatology Institute.
Does Dr. Calvin H. Hall Jr. accept Medicare?
Yes. CMS data shows Dr. Hall billed Medicare for 22 services in 2024, and Dr. Hall accepts Medicare assignment.
How many Medicare patients does Dr. Calvin H. Hall Jr. see?
CMS counts 41 Medicare patients who saw Dr. Hall in 2024, with an average age of 75.
What services does Dr. Calvin H. Hall Jr. bill to Medicare?
In 2024, Dr. Hall's most billed Medicare services were office visit, established patient (99214).
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Where did Dr. Calvin H. Hall Jr. go to medical school?
Dr. Hall graduated from Illinois Medical College in 1979.
What drugs does Dr. Calvin H. Hall Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Hall's most prescribed drugs by claims were Gavilyte-G.
How long has Dr. Calvin H. Hall Jr. been practicing?
Dr. Hall graduated from medical school in 1979, 47 years ago.
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