Administration, IntravenousHyperparathyroidism, SecondaryPeptides
Dr. Gregory Michael Bell, MD
NPI1053425116
- Publications
- 16
- Industry payments
- $4,182
- State licenses
- 2
- Year NPI issued
- 2006
- Practice address
- 157 Trinidad Dr, Tiburon, CA 94920-1037
- Practice phone
- Call (415) 435-6210
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Bell's professional email, personal email and mobile number
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Dr. Gregory Michael Bell is a rheumatologist in Tiburon, California
Dr. Bell practices in Tiburon, California.
Dr. Bell's NPI, 1053425116, was assigned on August 18, 2006. Dr. Bell graduated from Weill Cornell Medicine in 1984. Dr. Bell holds California license G63151.
NPI and contact details
- NPI
- 1053425116NPI Registry (opens in a new tab)
- NPI enumeration date
- August 18, 2006
- NPI status
- Active
- Practice phone
- (415) 435-6210
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Gregory Michael Bell's practice address is in Tiburon, California
Dr. Bell's practice address in the NPI Registry is 157 Trinidad Dr, Tiburon, CA 94920-1037. The practice phone is (415) 435-6210.
- NPI Registry address157 Trinidad Dr, Tiburon, CA 94920-1037Phone(415) 435-6210
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Gregory Michael Bell's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Bell practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Bell's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Michael Bell is one of 821 rheumatologists in California
Rheumatology is Dr. Bell's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Bell is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Bell's licenses on file in 2 states: California and Illinois.
Specialties and state licenses
- Rheumatology, CaliforniaPrimary
- Illinois license
Rheumatologists near Dr. Bell
Counts of rheumatologists 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. Gregory Michael Bell's patients have a median age of 88
Across all payers, Dmand AI patient panel data puts Dr. Bell's median patient age at 88.
Dr. Bell's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 88
Source: Dmand AI Patient Panel Data
Dr. Gregory Michael Bell has 16 publications on record
Dmand AI links 16 papers to Dr. Bell, published from 2013 to 2015. 2013 was the busiest year, with 4. The most frequent topics are Peptides, Double-Blind Method and CD2 Antigens. Dr. Bell has published most often in J Exp Med. Dr. Bell's most frequent co-authors are John Baskerville Imboden, MD and William Ewing Seaman, M, D.
Papers16
Years published2013 to 2015
Dr. Bell's papers by year, 2013 to 2015
Topics Dr. Bell writes about most
- Peptides
- Double-Blind Method
- CD2 Antigens
- Hyperparathyroidism, Secondary
- Receptors, Calcium-Sensing
- Renal Dialysis
- T-Lymphocytes
- Antibodies, Monoclonal
Dr. Bell's most frequent co-authors
Recent publications by Dr. Bell
Area Under CurveChemotherapy, AdjuvantCreatine Kinase, MB Form
Administration, IntravenousCircadian RhythmDouble-Blind Method
Hyperparathyroidism, SecondaryInjections, IntravenousKidney Failure, Chronic
Fibroblast Growth Factor-23HEK293 CellsHyperparathyroidism, Secondary
See who Dr. Bell researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Bell works with, so you can find a warm path to the right rheumatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gregory Michael Bell received $4,182 in industry payments from 2016 to 2025
CMS Open Payments shows 12 general payments to Dr. Bell from 3 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 76% of the total. Pfizer Inc. paid the most, $3,187.
General payments to Dr. Bell by program year, 2016 to 2025
General payments to Dr. Bell by kind, 2016 to 2025
$4.2Kin total
- Travel and lodging$3,16676%
- Food and beverage$1,01624%
Companies that paid Dr. Bell the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory Michael Bell graduated from Weill Cornell Medicine
Dr. Bell graduated from Weill Cornell Medicine in 1984.
- Medical school
- Board certified in internal medicine
- Board certified in rheumatology
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory Michael Bell'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (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. Gregory Michael Bell
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Gregory Michael Bell's NPI number?
Dr. Gregory Michael Bell's NPI number is 1053425116. It was assigned on August 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Michael Bell?
Dr. Gregory Michael Bell is a rheumatologist in Tiburon, California. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Gregory Michael Bell practice?
Dr. Bell practices at 157 Trinidad Dr, Tiburon, CA 94920-1037.
What is Dr. Gregory Michael Bell's office phone number?
The practice phone on file for Dr. Bell is (415) 435-6210.
What is Dr. Gregory Michael Bell's medical license number?
Dr. Bell holds California license G63151, one of the licenses on file in 2 states.
Which states has Dr. Gregory Michael Bell been licensed in?
Dmand AI has state licenses on file for Dr. Bell in California (1988 to 2026) and Illinois (1987 to 2017).
Is Dr. Gregory Michael Bell board certified?
Yes. Dr. Bell is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Gregory Michael Bell go to medical school?
Dr. Bell graduated from Weill Cornell Medicine in 1984.
Has Dr. Gregory Michael Bell received payments from drug or device companies?
CMS Open Payments shows $4,182 in general payments to Dr. Bell from 3 companies from 2016 to 2025. The largest total came from Pfizer Inc.
How long has Dr. Gregory Michael Bell been practicing?
Dr. Bell graduated from medical school in 1984, 42 years ago.
Does Dr. Gregory Michael Bell do research?
Dmand AI links 16 publications to Dr. Bell, published from 2013 to 2015.
Who does Dr. Gregory Michael Bell publish with?
Dr. Bell's most frequent co-authors are John Baskerville Imboden, MD (2 shared papers) and William Ewing Seaman, M, D (1 shared paper).
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