Douglass Drelich, M.D.
Hematology (Internal Medicine) Physician · Philadelphia, PA
Douglass Drelich, M.D. is a hematology (internal medicine) physician with a practice address in Philadelphia, Pennsylvania, and NPI 1932394095, issued on Sep 12, 2007. Check the license on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Douglass Drelich
- Credential
- M.D.
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- Practice location
- 1015 Chestnut Street, Philadelphia, PA 19107
- Phone
- (215) 955-4730
- Enumerated
- Sep 12, 2007
- Entity
- Type 1 · individual
Also registered at 1015 Chestnut Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Paul BrayHematology (Internal Medicine) Physician1144333097
- Jaime Caro, M.D.Internal Medicine Physician1295759413
- Steven McKenzie, M.D.Internal Medicine Physician1568476729
- Sanaa Rizk, MDHematology (Internal Medicine) Physician1437394210
- Marc Schwartz, MDCardiovascular Disease Physician1700997079
- John Zurlo, MDInfectious Disease Physician1003865312
Verify Douglass Drelich in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)Check the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
93% fewer Medicare Part D claims than the average hematology (internal medicine) physician in 2024
50 Medicare Part D claims for 13 beneficiaries, against an average of 684 among the 1,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Warfarin Sodium20 claims
- Celecoxib11 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.
One hospital or facility affiliation
- Jefferson University PhysiciansPhiladelphia, PA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Hematology (Internal Medicine) Physician providers in Pennsylvania
There are 70 hematology (internal medicine) physician records in Pennsylvania.
Other hematology (internal medicine) physician records in Pennsylvania
- Hamid Al-Mondhiry, MDHershey, PA1053369561
- Jane Alavi, MDPhiladelphia, PA1285662387
- Nadia Ali, M.D.Philadelphia, PA1922386317
- Yull Arriaga, MDBethlehem, PA1023065091
- Saleh Ayache, M.D.Philadelphia, PA1285840785
- Daria Babushok, MD, PHDPhiladelphia, PA1558521054
- James Ballard, MDHershey, PA1023067279
- William Barry, M.D.Philadelphia, PA1144590266
- Frank Beardell, MDScranton, PA1245235712
- James Brady, M.D.Wilkes Barre, PA1750554986
Common questions
What is Douglass Drelich, M.D.'s NPI number?
Douglass Drelich, M.D.'s National Provider Identifier (NPI) is 1932394095, issued on Sep 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Douglass Drelich, M.D. located?
The NPPES record lists a practice address at 1015 Chestnut Street, Philadelphia, PA, 19107. Phone: (215) 955-4730. Providers update this record themselves, so call before visiting.
How can I verify Douglass Drelich, M.D.'s license?
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 Douglass Drelich, M.D. prescribe under Medicare Part D?
In 2024, Douglass Drelich, M.D. had 50 Medicare Part D claims for 13 beneficiaries; the average among hematology (internal medicine) physician prescribers was 684. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.