Geoffrey David Mills, M.D. PH.D.
Family Medicine Physician · Philadelphia, PA
Geoffrey David Mills, M.D. PH.D. is a family medicine physician with a practice address in Philadelphia, Pennsylvania, and NPI 1659492791, issued on Apr 3, 2007. Check the license (Pennsylvania MD435581, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Geoffrey David Mills
- Credential
- M.D. PH.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD435581 PA
Self-reported in NPPES; status is on the state search - Practice location
- 833 Chestnut St, Philadelphia, PA 19107
- Phone
- (215) 955-7190
- Enumerated
- Apr 3, 2007
- Record last updated
- Jul 18, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (215) 923-9186
- Medicaid IDs
- 1023339950001 PA
0202088 NJ - Medicare enrollment
- Enrolled (PECOS I20090819000338); accepts Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 7,483 in Pennsylvania → Look up another NPI →
Also registered at 833 Chestnut St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christine Arenson, M.D.Family Medicine Physician1316970403
Verify Geoffrey David Mills in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD435581Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average family medicine physician in 2024
3,859 Medicare Part D claims for 322 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 110 claims were for opioids.
Most prescribed
- Atorvastatin Calcium322 claims
- Amlodipine Besylate202 claims
- Fluticasone Propionate140 claims
- Omeprazole131 claims
- Albuterol Sulfate Hfa126 claims
- Levothyroxine Sodium104 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Jefferson University PhysiciansPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Geoffrey David Mills among 7,483 family medicine physician records in Pennsylvania
Geoffrey David Mills, M.D. PH.D. is one of 7,483 family medicine physician records with a practice address in Pennsylvania. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 47% of them.
- NPI issued2007 · 47% of these records are older, 46% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2006 · median 2005 among the 4,529 with a school on file
- Record last updated2014 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
800 family medicine physician records list a practice address in Philadelphia
They are 800 of the 42,849 NPPES records with a practice address in Philadelphia, and 7,483 family medicine physician records in Pennsylvania.
All 7,483 in Pennsylvania → Every provider in Philadelphia → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Christine Arenson, M.D.Philadelphia, PA 191071316970403
- Joshua Barash, M.D.Philadelphia, PA 191071205861499
- George Bradford, M.D.Philadelphia, PA 191071558330324
- Christopher Chambers, M.D.Philadelphia, PA 191071528084050
- Kristin Desimone, M.D.Philadelphia, PA 191071477586501
- Victor Diaz, M.D.Philadelphia, PA 191071013933548
- Anne Dubreuil, M.D.Philadelphia, PA 191071588680003
- Dorothy Fojtik, M.D.Philadelphia, PA 191071720012727
Common questions
What is Geoffrey David Mills, M.D. PH.D.'s NPI number?
Geoffrey David Mills, M.D. PH.D.'s National Provider Identifier (NPI) is 1659492791, issued on Apr 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Geoffrey David Mills, M.D. PH.D. located?
The NPPES record lists a practice address at 833 Chestnut St, Philadelphia, PA, 19107. Phone: (215) 955-7190. Providers update this record themselves, so call before visiting.
How can I verify Geoffrey David Mills, M.D. PH.D.'s license?
NPPES lists Pennsylvania license number MD435581, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Geoffrey David Mills, M.D. PH.D. prescribe under Medicare Part D?
In 2024, Geoffrey David Mills, M.D. PH.D. had 3,859 Medicare Part D claims for 322 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.