Philip S. Walter, MD
Internal Medicine Physician · Williamsburg, VA
Philip S. Walter, MD is an internal medicine physician with a practice address in Williamsburg, Virginia, and NPI 1063487353, issued on Feb 21, 2006. Check the license (Virginia 0101044944, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Philip S. Walter
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 0101044944 VA
Self-reported in NPPES; status is on the state search - Practice location
- 4374 New Town Ave, Williamsburg, VA 23188
- Phone
- (757) 259-6770
- Enumerated
- Feb 21, 2006
- Record last updated
- May 16, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (757) 259-6794
- Medicaid ID
- 010111790 VA
- Medicare enrollment
- Enrolled (PECOS I20041229000476); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,599 in Virginia → Look up another NPI →
Also registered at 4374 New Town Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Philip S. Walter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101044944Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.8 times the Medicare Part D claims of the average internal medicine physician in 2024
12,053 Medicare Part D claims for 940 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 89 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,419 claims
- Amlodipine Besylate1,072 claims
- Losartan Potassium515 claims
- Metformin Hcl396 claims
- Eliquis394 claims
- Lisinopril316 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 MIPS final score for 2023 (Medicare payment program): 95.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Sentara Medical GroupWilliamsburg, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Philip S. Walter among 3,599 internal medicine physician records in Virginia
Philip S. Walter, MD is one of 3,599 internal medicine physician records with a practice address in Virginia. 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 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1987 · median 2003 among the 2,234 with a school on file
- Record last updated2014 · 53% 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 Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
40 internal medicine physician records list a practice address in Williamsburg
They are 40 of the 1,707 NPPES records with a practice address in Williamsburg, and 3,599 internal medicine physician records in Virginia.
All 3,599 in Virginia → Every provider in Williamsburg → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Sanford Marcuson, M.D.Williamsburg, VA 231881710952676
- Patricia Marcuson, M.D.Williamsburg, VA 231881609841485
- Lisa Merrill, M.D.Williamsburg, VA 231881235109653
- Julia Myers, MDWilliamsburg, VA 231881932150489
Common questions
What is Philip S. Walter, MD's NPI number?
Philip S. Walter, MD's National Provider Identifier (NPI) is 1063487353, issued on Feb 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Philip S. Walter, MD located?
The NPPES record lists a practice address at 4374 New Town Ave, Williamsburg, VA, 23188. Phone: (757) 259-6770. Providers update this record themselves, so call before visiting.
How can I verify Philip S. Walter, MD's license?
NPPES lists Virginia license number 0101044944, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Philip S. Walter, MD prescribe under Medicare Part D?
In 2024, Philip S. Walter, MD had 12,053 Medicare Part D claims for 940 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Philip S. Walter, MD's MIPS final score?
The 2023 MIPS final score is 95.1 of 100. 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.