Katherine Pryor, MD
Rheumatology Physician · Boston, MA
Katherine Pryor, MD is a rheumatology physician with a practice address in Boston, Massachusetts, and NPI 1265894166, issued on Mar 22, 2016. Check the license (Massachusetts 281482, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Katherine Pryor
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 281482 MA
Self-reported in NPPES; status is on the state search - Practice location
- 75 Francis St, Boston, MA 02115
- Phone
- (617) 525-8268
- Enumerated
- Mar 22, 2016
- Record last updated
- Jul 5, 2023
- Medicare enrollment
- Enrolled (PECOS I20230525001555); accepts Medicare assignment
- Medical or professional school
- Duke University School Of Medicine, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 343 in Massachusetts → Look up another NPI →
Also registered at 75 Francis St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Muhammad Abd-El-Barr, M.D., PH.D.Neurological Surgery Physician1891922688
- Duaa AbdelhameidStudent in an Organized Health Care Education/Training Program1851852867
Verify Katherine Pryor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 281482Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average rheumatology physician in 2024
539 Medicare Part D claims for 134 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone91 claims
- Methotrexate59 claims
- Hydroxychloroquine Sulfate45 claims
- Alendronate Sodium40 claims
- Humira(Cf) Pen28 claims
- Atorvastatin Calcium19 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
- Mass General Brigham Medical Group Suburban Massachusetts IncNewton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Pryor among 343 rheumatology physician records in Massachusetts
Katherine Pryor, 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 2016, is newer than 86% of them.
- NPI issued2016 · 86% of these records are older, 13% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2016 · median 2004 among the 212 with a school on file
- Record last updated2023 · 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 Boston → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Paul Anderson, M.D., PH.D.Boston, MA 021151235127432
- Ronald Anderson, MDBoston, MA 021151154388478
- Michael Brenner, MDBoston, MA 021151699732909
- Jack Bukowski, MD PHDBoston, MA 021151639121544
- Jonathan Coblyn, MDBoston, MA 021151447200969
- Karen Costenbader, MD MPHBoston, MA 021151447216825
- I Cheng Ho, MDBoston, MA 021151346292133
- Elizabeth Karlson, MDBoston, MA 021151548228075
Common questions
What is Katherine Pryor, MD's NPI number?
Katherine Pryor, MD's National Provider Identifier (NPI) is 1265894166, issued on Mar 22, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Pryor, MD located?
The NPPES record lists a practice address at 75 Francis St, Boston, MA, 02115. Phone: (617) 525-8268. Providers update this record themselves, so call before visiting.
How can I verify Katherine Pryor, MD's license?
NPPES lists Massachusetts license number 281482, 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 Katherine Pryor, MD prescribe under Medicare Part D?
In 2024, Katherine Pryor, MD had 539 Medicare Part D claims for 134 beneficiaries; 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.