Claudia S. Lum, D.O.
Internal Medicine Physician · East Norriton, PA
Claudia S. Lum, D.O. is an internal medicine physician with a practice address in East Norriton, Pennsylvania, and NPI 1972733988, issued on Jul 24, 2009. Check the license (Pennsylvania OS015369, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Claudia S. Lum
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- OS015369 PA
Self-reported in NPPES; status is on the state search - Practice location
- 559 W Germantown Pike, East Norriton, PA 19403
- Phone
- (484) 622-7071
- Enumerated
- Jul 24, 2009
- Record last updated
- Jul 11, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicaid ID
- 1027619820001 PA
- Medicare enrollment
- Enrolled (PECOS I20121024000355); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2009
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 559 W Germantown Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Claudia S. Lum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS015369Check 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 internal medicine physician in 2024
32 Medicare Part D claims for 24 beneficiaries, against an average of 3,176 among the 108,855 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.
Bills Medicare through one group practice
- Einstein Community Health Associates IncPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Claudia S. Lum among 7,300 internal medicine physician records in Pennsylvania
Claudia S. Lum, D.O. is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 47% of them.
- NPI issued2009 · 47% of these records are older, 50% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2009 · median 2008 among the 4,208 with a school on file
- Record last updated2016 · 56% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 internal medicine physician records list a practice address in East Norriton
They are 24 of the 347 NPPES records with a practice address in East Norriton, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in East Norriton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Daniel Bitetto, M.D.East Norriton, PA 194031861695389
- Bernard Carlin, MDEast Norriton, PA 194031881635936
- Margaret Carrillo, M.D.Norristown, PA 194031821117516
- Michael Cerino, D.O.East Norriton, PA 194031740462795
- Charles Cutler, MDEast Norriton, PA 194031033165196
- Westlane Depew, D.O.Norristown, PA 194031114071198
- Michael Esrick, MDEast Norriton, PA 194031619172665
- Judith Gordon, M.D.Norristown, PA 194031134249352
Common questions
What is Claudia S. Lum, D.O.'s NPI number?
Claudia S. Lum, D.O.'s National Provider Identifier (NPI) is 1972733988, issued on Jul 24, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Claudia S. Lum, D.O. located?
The NPPES record lists a practice address at 559 W Germantown Pike, East Norriton, PA, 19403. Phone: (484) 622-7071. Providers update this record themselves, so call before visiting.
How can I verify Claudia S. Lum, D.O.'s license?
NPPES lists Pennsylvania license number OS015369, 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 Claudia S. Lum, D.O. prescribe under Medicare Part D?
In 2024, Claudia S. Lum, D.O. had 32 Medicare Part D claims for 24 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.