Ann M. Gryboski, MD
Internal Medicine Physician · South Yarmouth, MA
Ann M. Gryboski, MD is an internal medicine physician with a practice address in South Yarmouth, Massachusetts, and NPI 1053389924, issued on Mar 8, 2006. Check the license (Massachusetts 58129, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Ann M. Gryboski
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 58129 MA
Self-reported in NPPES; status is on the state search - Practice location
- 495 Station Ave, South Yarmouth, MA 02664
- Phone
- (508) 778-4777
- Enumerated
- Mar 8, 2006
- Record last updated
- Jun 18, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (508) 771-9555
- Medicaid ID
- 3052842 MA
- Medicare enrollment
- Enrolled (PECOS I20050926001172); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 1986
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 495 Station Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jorge Alfonso, MDInternal Medicine Physician1013983402
- Jordan Chadwick, FNPFamily Nurse Practitioner1306660444
- Marissa Frongillo, N.P.Family Nurse Practitioner1588017263
- Mary Gallagher, FNPFamily Nurse Practitioner1124556725
- Dimitrios Minadakis, PA-CMedical Physician Assistant1063852085
- Carol Penfield, NPCAdult Health Nurse Practitioner1306141544
Verify Ann M. Gryboski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 58129Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average internal medicine physician in 2024
8,670 Medicare Part D claims for 671 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 255 claims were for opioids.
Most prescribed
- Atorvastatin Calcium823 claims
- Levothyroxine Sodium504 claims
- Omeprazole446 claims
- Lisinopril420 claims
- Amlodipine Besylate372 claims
- Metoprolol Succinate329 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $170.51
7 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk 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.
Bills Medicare through one group practice
- Medical Affiliates OF Cape Cod IncHyannis, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ann M. Gryboski among 6,825 internal medicine physician records in Massachusetts
Ann M. Gryboski, MD is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1986 · median 2004 among the 4,103 with a school on file
- Record last updated2019 · 64% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 internal medicine physician records list a practice address in South Yarmouth
They are 5 of the 254 NPPES records with a practice address in South Yarmouth, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in South Yarmouth → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jorge Alfonso, MDSouth Yarmouth, MA 026641013983402
- Julia Carson, D.O.S Yarmouth, MA 026641548279953
- Stephen Malaquias, MDSouth Yarmouth, MA 026641285602771
- Mahmood Rana, M.DSouth Yarmouth, MA 026641285843169
- Kumara Sidhartha, MDSouth Yarmouth, MA 026641629091608
- Matthew Burdette, DOWellfleet, MA 026671407240955
- Lawrence Millhofer, M.D.Wellfleet, MA 026671033159561
- Lawrence Newman, MDWellfleet, MA 026671548229727
Common questions
What is Ann M. Gryboski, MD's NPI number?
Ann M. Gryboski, MD's National Provider Identifier (NPI) is 1053389924, issued on Mar 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ann M. Gryboski, MD located?
The NPPES record lists a practice address at 495 Station Ave, South Yarmouth, MA, 02664. Phone: (508) 778-4777. Providers update this record themselves, so call before visiting.
How can I verify Ann M. Gryboski, MD's license?
NPPES lists Massachusetts license number 58129, 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 Ann M. Gryboski, MD prescribe under Medicare Part D?
In 2024, Ann M. Gryboski, MD had 8,670 Medicare Part D claims for 671 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Ann M. Gryboski, MD's MIPS final score?
The 2023 MIPS final score is 79.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.