Susan K. Underwood, MD
Family Medicine Physician · Harleysville, PA
Susan K. Underwood, MD is a family medicine physician with a practice address in Harleysville, Pennsylvania, and NPI 1568414563, issued on May 17, 2006. Check the license (Pennsylvania MD042356L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Susan K. Underwood
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD042356L PA
Self-reported in NPPES; status is on the state search - Practice location
- 484 Harleysville Pike, Harleysville, PA 19438
- Phone
- (215) 256-8040
- Enumerated
- May 17, 2006
- Record last updated
- Jan 4, 2011 (not updated in 15 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 484 Harleysville Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Susan K. Underwood in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD042356LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average family medicine physician in 2024
163 Medicare Part D claims for 13 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate43 claims
- Losartan Potassium14 claims
- Glycopyrrolate11 claims
- Lisinopril11 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.
11 family medicine physician records list a practice address in Harleysville
They are 11 of the 226 NPPES records with a practice address in Harleysville, and 7,483 family medicine physician records in Pennsylvania.
All 11 in Harleysville → All 7,483 in Pennsylvania → Every provider in Harleysville →
Other family medicine physician records in Pennsylvania
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- Jose Abad, MDPittsburgh, PA1295962546
- Mario Abad, MDDuncannon, PA1710022975
- Ray Abarintos, MDPhiladelphia, PA1417339516
- Jasim Abbasi, DOErie, PA1396537452
- Daived Abboud, M.D.Allentown, PA1295189322
- Ihab Abdelaal, D.O.Macungie, PA1588944938
- Tony Abdelmaseeh, M.DJermyn, PA1073910923
- Adam Abdulally, MDPittsburgh, PA1184861544
- Maimuna AbdullahiLebanon, PA1477344018
Common questions
What is Susan K. Underwood, MD's NPI number?
Susan K. Underwood, MD's National Provider Identifier (NPI) is 1568414563, issued on May 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Susan K. Underwood, MD located?
The NPPES record lists a practice address at 484 Harleysville Pike, Harleysville, PA, 19438. Phone: (215) 256-8040. Providers update this record themselves, so call before visiting.
How can I verify Susan K. Underwood, MD's license?
NPPES lists Pennsylvania license number MD042356L, 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 Susan K. Underwood, MD prescribe under Medicare Part D?
In 2024, Susan K. Underwood, MD had 163 Medicare Part D claims for 13 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.