Michael Walkenstein, MD
Pulmonary Disease Physician · Philadelphia, PA
Michael Walkenstein, MD is a pulmonary disease physician with a practice address in Philadelphia, Pennsylvania, and NPI 1982668042, issued on Apr 14, 2006. Check the license (Pennsylvania MD026600E, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Michael Walkenstein
- Credential
- MD
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- MD026600E PA
Self-reported in NPPES; status is on the state search - Practice location
- 5401 Old York RD, Philadelphia, PA 19141
- Phone
- (215) 456-6950
- Enumerated
- Apr 14, 2006
- Record last updated
- Mar 24, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (215) 456-1766
- Medicaid ID
- 1007706230139 PA
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 779 in Pennsylvania → Look up another NPI →
Also registered at 5401 Old York RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael Walkenstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD026600ECheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
18 Medicare Part D claims, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D.
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.
Michael Walkenstein among 779 pulmonary disease physician records in Pennsylvania
Michael Walkenstein, MD is one of 779 pulmonary disease physician records with a practice address in Pennsylvania. 86% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 53% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2015 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in Pennsylvania
There are 779 pulmonary disease physician records in Pennsylvania.
All 779 in Pennsylvania → Every provider in Philadelphia → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Glenn Eiger, MDPhiladelphia, PA 191411790749844
- Oshioke Esivue, M.D.Philadelphia, PA 191411215387261
- Steven Goldberg, MDPhiladelphia, PA 191411497710164
- Vivek Jayaschandran, M.D.Philadelphia, PA 191411437533999
- Enrique Pacheco Sumoza, M.D.Philadelphia, PA 191411649666983
- Kumar Sarvottam, M.DPhiladelphia, PA 191411740630888
- Bhavna Sharma, M.DPhiladelphia, PA 191411851541114
- Aamir Ajmeri, M.D.Philadelphia, PA 191401740639129
Common questions
What is Michael Walkenstein, MD's NPI number?
Michael Walkenstein, MD's National Provider Identifier (NPI) is 1982668042, issued on Apr 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Walkenstein, MD located?
The NPPES record lists a practice address at 5401 Old York RD, Philadelphia, PA, 19141. Phone: (215) 456-6950. Providers update this record themselves, so call before visiting.
How can I verify Michael Walkenstein, MD's license?
NPPES lists Pennsylvania license number MD026600E, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Walkenstein, MD prescribe under Medicare Part D?
In 2024, Michael Walkenstein, MD had 18 Medicare Part D claims; the average among pulmonary disease physician prescribers was 1,425. 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.