Peter H. Witham, MD
Internal Medicine Physician · Southwest Harbor, ME
Peter H. Witham, MD is an internal medicine physician with a practice address in Southwest Harbor, Maine, and NPI 1417043639, issued on Oct 5, 2006. Check the license (Maine MD19832, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Peter H. Witham
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD19832 ME
0420010126 VT
Self-reported in NPPES; status is on the state search - Practice location
- 16 Community LN, Southwest Harbor, ME 04679
- Phone
- (207) 244-5630
- Enumerated
- Oct 5, 2006
- Record last updated
- Aug 23, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicaid ID
- OVN2345 VT
- Medicare enrollment
- Enrolled (PECOS I20131010001226); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1988
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 597 in Maine → Look up another NPI →
Also registered at 16 Community LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maddrey Coover, FNPFamily Nurse Practitioner1376220616
- Ann Dundon, PA-CMedical Physician Assistant1619070687
- Tanya Hanke, DOFamily Medicine Physician1760644082
- Michael Heniser, DOFamily Medicine Physician1457382251
- Stephen Koscherak, PHDClinical Psychologist1144290941
- Julian Kuffler, M.D.Family Medicine Physician1619947785
Verify Peter H. Witham in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD19832Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% more Medicare Part D claims than the average internal medicine physician in 2024
5,752 Medicare Part D claims for 351 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 183 claims were for opioids.
Most prescribed
- Atorvastatin Calcium354 claims
- Amlodipine Besylate272 claims
- Lisinopril219 claims
- Metoprolol Succinate210 claims
- Levothyroxine Sodium206 claims
- Rosuvastatin Calcium194 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): 88 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).
One hospital affiliation
- Mount Desert Island HospitalBar Harbor, ME · Critical Access Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Peter H. Witham among 597 internal medicine physician records in Maine
Peter H. Witham, MD is one of 597 internal medicine physician records with a practice address in Maine. 77% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 44% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1988 · median 2005 among the 369 with a school on file
- Record last updated2019 · 60% 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 Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 internal medicine physician record lists a practice address in Southwest Harbor
They are 1 of the 38 NPPES records with a practice address in Southwest Harbor, and 597 internal medicine physician records in Maine.
All 597 in Maine → Every provider in Southwest Harbor → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- William Borer, M.D.Jonesport, ME 046491114935798
- Hassan Abouleish, MDHoulton, ME 047301255300307
- Claude Boma, M.D.Houlton, ME 047301386612372
- Owen Igbinosa, MDHoulton, ME 047301588168702
- Solomon Olabiyi, MDHoulton, ME 047301366734170
- Jon Older, DOHoulton, ME 047301073582128
- Larry Sokolic, MDHoulton, ME 047301265559785
- Ted Sussman, MDHoulton, ME 047301679542708
Common questions
What is Peter H. Witham, MD's NPI number?
Peter H. Witham, MD's National Provider Identifier (NPI) is 1417043639, issued on Oct 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Peter H. Witham, MD located?
The NPPES record lists a practice address at 16 Community LN, Southwest Harbor, ME, 04679. Phone: (207) 244-5630. Providers update this record themselves, so call before visiting.
How can I verify Peter H. Witham, MD's license?
NPPES lists Maine license number MD19832, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Peter H. Witham, MD prescribe under Medicare Part D?
In 2024, Peter H. Witham, MD had 5,752 Medicare Part D claims for 351 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Peter H. Witham, MD's MIPS final score?
The 2023 MIPS final score is 88 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.