Alan B. Marks, MD
Rheumatology Physician · Concord, MA
Alan B. Marks, MD is a rheumatology physician with a practice address in Concord, Massachusetts, and NPI 1689773236, issued on Sep 21, 2006. Check the license (Massachusetts 42968, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Alan B. Marks
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 42968 MA
Self-reported in NPPES; status is on the state search - Practice location
- 290 Baker Ave Suite 102N, Concord, MA 01742
- Phone
- (978) 369-0502
- Enumerated
- Sep 21, 2006
- Record last updated
- Sep 10, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (978) 369-5943
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 343 in Massachusetts → Look up another NPI →
Verify Alan B. Marks in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 42968Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average rheumatology physician in 2024
12 Medicare Part D claims, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Alan B. Marks among 343 rheumatology physician records in Massachusetts
Alan B. Marks, MD is one of 343 rheumatology physician records with a practice address in Massachusetts. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 45% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2012 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Massachusetts
There are 343 rheumatology physician records in Massachusetts.
All 343 in Massachusetts → Every provider in Concord → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Pamela Deluca, M.D.Concord, MA 017421710946462
- Martin Kafina, M.D.Concord, MA 017421427016492
- Robert Pinals, M.D.Bedford, MA 017301710112685
- Kerri Batra, M.D.Mendon, MA 017561295714806
- Bonnie Bidinger, M.D.Mendon, MA 017561326029463
- Elena Eberle, M.D.Southborough, MA 017721245436526
- Sebnem Erbay, M.D.Framingham, MA 017021992760094
- Eileen Winston, MDFramingham, MA 017021639134133
Common questions
What is Alan B. Marks, MD's NPI number?
Alan B. Marks, MD's National Provider Identifier (NPI) is 1689773236, issued on Sep 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alan B. Marks, MD located?
The NPPES record lists a practice address at 290 Baker Ave Suite 102N, Concord, MA, 01742. Phone: (978) 369-0502. Providers update this record themselves, so call before visiting.
How can I verify Alan B. Marks, MD's license?
NPPES lists Massachusetts license number 42968, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Alan B. Marks, MD prescribe under Medicare Part D?
In 2024, Alan B. Marks, MD had 12 Medicare Part D claims; the average among rheumatology physician prescribers was 1,978. 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.