Greigstone Montgomery Yearwood, M.D.
Internal Medicine Physician · Woonsocket, RI
Greigstone Montgomery Yearwood, M.D. is an internal medicine physician with a practice address in Woonsocket, Rhode Island, and NPI 1689631640, issued on Apr 26, 2006. Check the license (Rhode Island MD07911, as entered in NPPES) on the Rhode Island Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Greigstone Montgomery Yearwood
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD07911 RI
Self-reported in NPPES; status is on the state search - Practice location
- 191 Social St Ste 840, Woonsocket, RI 02895
- Phone
- (401) 762-2535
- Enumerated
- Apr 26, 2006
- Record last updated
- Jul 16, 2026
- Fax
- (401) 762-2858
- Medicaid ID
- 9020093 RI
- Medicare enrollment
- Enrolled (PECOS I20101207000878); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,033 in Rhode Island → Look up another NPI →
Verify Greigstone Montgomery Yearwood in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersRhode Island Board of Medical Licensure and Discipline
Search for license MD07911Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.7 times the Medicare Part D claims of the average internal medicine physician in 2024
11,726 Medicare Part D claims for 589 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 339 claims were for opioids.
Most prescribed
- Atorvastatin Calcium634 claims
- Amlodipine Besylate451 claims
- Omeprazole352 claims
- Lisinopril350 claims
- Levothyroxine Sodium347 claims
- Metformin Hcl327 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.
Industry payments in 2024: $1,053.22
52 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Greigstone Montgomery Yearwood among 1,033 internal medicine physician records in Rhode Island
Greigstone Montgomery Yearwood, M.D. is one of 1,033 internal medicine physician records with a practice address in Rhode Island. 80% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 62% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1988 · median 2006 among the 590 with a school on file
- Record last updated2026 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Rhode Island practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 internal medicine physician records list a practice address in Woonsocket
They are 24 of the 1,112 NPPES records with a practice address in Woonsocket, and 1,033 internal medicine physician records in Rhode Island.
All 1,033 in Rhode Island → Every provider in Woonsocket → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Irfan Ahmad, M.D.Woonsocket, RI 028951063460426
- Paul Alexandrov, M.D.Woonsocket, RI 028951215358510
- Saman Ali, M.D.Woonsocket, RI 028951730414863
- Stanley Balon, M.D.Woonsocket, RI 028951003860172
- Troyen Brennan, M.D.Woonsocket, RI 028951174686265
- Glenn Fort, MDWoonsocket, RI 028951114900024
- Jibran Khan, M.D.Woonsocket, RI 028951902803935
- Catherine Kigonya, M.DWoonsocket, RI 028951760632483
Common questions
What is Greigstone Montgomery Yearwood, M.D.'s NPI number?
Greigstone Montgomery Yearwood, M.D.'s National Provider Identifier (NPI) is 1689631640, issued on Apr 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Greigstone Montgomery Yearwood, M.D. located?
The NPPES record lists a practice address at 191 Social St Ste 840, Woonsocket, RI, 02895. Phone: (401) 762-2535. Providers update this record themselves, so call before visiting.
How can I verify Greigstone Montgomery Yearwood, M.D.'s license?
NPPES lists Rhode Island license number MD07911, as entered by the provider. Search the Rhode Island Board of Medical Licensure and Discipline at https://healthri.mylicense.com/Verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Greigstone Montgomery Yearwood, M.D. prescribe under Medicare Part D?
In 2024, Greigstone Montgomery Yearwood, M.D. had 11,726 Medicare Part D claims for 589 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.