Walter A. Hollinger, MD
Internal Medicine Physician · Providence, RI
Walter A. Hollinger, MD is an internal medicine physician with a practice address in Providence, Rhode Island, and NPI 1679663405, issued on Oct 13, 2006. Check the license (Rhode Island MD11613, as entered in NPPES) on the Rhode Island Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Walter A. Hollinger
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD11613 RI
Self-reported in NPPES; status is on the state search - Practice location
- 21 Peace St, Providence, RI 02907
- Phone
- (401) 456-3649
- Enumerated
- Oct 13, 2006
- Record last updated
- Nov 7, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicaid ID
- 7057054 RI
- Medicare enrollment
- Enrolled (PECOS I20041227000049); accepts Medicare assignment
- Medical or professional school
- Pennsylvania State University College Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,033 in Rhode Island → Look up another NPI →
Also registered at 21 Peace St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marie Abejuela, MDInternal Medicine Physician1326229501
- Elsa Ayllon, RN CDOEDiabetes Educator Registered Nurse1508951724
- Mercedes BarinasInterpreter1255542015
- Susan Berardo, RNRegistered Nurse1518496066
- Katherine Blandino, R.D.Registered Dietitian1275674384
- Daniel BoatengPediatric Dentistry1740920057
Verify Walter A. Hollinger 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 MD11613Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.4 times the Medicare Part D claims of the average internal medicine physician in 2024
13,879 Medicare Part D claims for 544 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. 91 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,113 claims
- Amlodipine Besylate872 claims
- Metformin Hcl601 claims
- Omeprazole563 claims
- Losartan Potassium558 claims
- Lisinopril452 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: $162.06
6 payments; by number, the most common kind was food and beverage; the largest payer was Exact Sciences Corporation. 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
- Prospect Chartercare Sjhsri LLCLincoln, RI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Walter A. Hollinger among 1,033 internal medicine physician records in Rhode Island
Walter A. Hollinger, MD 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
- Graduated2001 · median 2006 among the 590 with a school on file
- Record last updated2019 · 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).
511 internal medicine physician records list a practice address in Providence
They are 511 of the 9,647 NPPES records with a practice address in Providence, and 1,033 internal medicine physician records in Rhode Island.
All 1,033 in Rhode Island → Every provider in Providence → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Marie Abejuela, MDProvidence, RI 029071326229501
- Mason Bandy, MDProvidence, RI 029071275279168
- Suzanne Bornschein, MDProvidence, RI 029071528016334
- Philip Chan, MDProvidence, RI 029071265658116
- Stephen Dunn, DOProvidence, RI 029071932604550
- Augustine Manocchia, M.D.Providence, RI 029071548461544
- Matthew Murphy, M.D.Providence, RI 029071376924993
- Emilio Rodriguez-Peris, M.D.Providence, RI 029071174619878
Common questions
What is Walter A. Hollinger, MD's NPI number?
Walter A. Hollinger, MD's National Provider Identifier (NPI) is 1679663405, issued on Oct 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Walter A. Hollinger, MD located?
The NPPES record lists a practice address at 21 Peace St, Providence, RI, 02907. Phone: (401) 456-3649. Providers update this record themselves, so call before visiting.
How can I verify Walter A. Hollinger, MD's license?
NPPES lists Rhode Island license number MD11613, 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 Walter A. Hollinger, MD prescribe under Medicare Part D?
In 2024, Walter A. Hollinger, MD had 13,879 Medicare Part D claims for 544 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.