Adam Nathan Hertlein, M.D.
Internal Medicine Physician · Philadelphia, PA
Adam Nathan Hertlein, M.D. is an internal medicine physician with a practice address in Philadelphia, Pennsylvania, and NPI 1114183878, issued on Aug 1, 2008. Check the license (Pennsylvania MD462425, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Adam Nathan Hertlein
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD462425 PA
57.014546 OH
Self-reported in NPPES; status is on the state search - Practice location
- 333 Cottman Ave, Philadelphia, PA 19111
- Phone
- (215) 728-2844
- Enumerated
- Aug 1, 2008
- Record last updated
- Nov 7, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (215) 214-1425
- Medicare enrollment
- Enrolled (PECOS I20171221000833); accepts Medicare assignment
- Medical or professional school
- Pennsylvania State University College Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 333 Cottman Ave
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- Md Usman Ali, M.D.Internal Medicine Physician1619316882
Verify Adam Nathan Hertlein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD462425Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 90.3 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
- The Milton S Hershey Medical Center Physicians GroupHershey, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Adam Nathan Hertlein among 7,300 internal medicine physician records in Pennsylvania
Adam Nathan Hertlein, M.D. 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 2008, is newer than 43% of them.
- NPI issued2008 · 43% of these records are older, 53% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2008 · median 2008 among the 4,208 with a school on file
- Record last updated2019 · 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).
1,855 internal medicine physician records list a practice address in Philadelphia
They are 1,855 of the 42,849 NPPES records with a practice address in Philadelphia, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Philadelphia → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Barnes, D.O.Philadelphia, PA 191111366466302
- Edward Bedrick, M.D.Philadelphia, PA 191111861434201
- Hyun Chang, M.D.Philadelphia, PA 191111780619536
- David Collins, MDPhiladelphia, PA 191111538120035
- Rohit Desai, M.D.Philadelphia, PA 191111508802729
- Daniel Holleran, M.D.Philadelphia, PA 191111225056468
- Mala Kailasam, MDPhiladelphia, PA 191111003849779
- Edmund Martin, M.D.Philadelphia, PA 191111932139888
Common questions
What is Adam Nathan Hertlein, M.D.'s NPI number?
Adam Nathan Hertlein, M.D.'s National Provider Identifier (NPI) is 1114183878, issued on Aug 1, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Adam Nathan Hertlein, M.D. located?
The NPPES record lists a practice address at 333 Cottman Ave, Philadelphia, PA, 19111. Phone: (215) 728-2844. Providers update this record themselves, so call before visiting.
How can I verify Adam Nathan Hertlein, M.D.'s license?
NPPES lists Pennsylvania license number MD462425, 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.
What is Adam Nathan Hertlein, M.D.'s MIPS final score?
The 2023 MIPS final score is 90.3 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.