Doctor profile · Federal record
Dr. William Harpster, MD
Internal Medicine Physician (CMS: Internal Medicine) · Washington, DC
- NPI 1689683401
- Accepts Medicare
- 55 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
425 2Nd St Nw
Washington, DC 200012003
(202) 508-0506
fax (202) 508-0525
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 1971 — 55 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- District of Columbia #MD22158
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1689683401. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
41
Distinct HCPCS
1
Medicare allowed
$132
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
82962 |
Blood glucose (sugar) test performed by hand-held instrument | 41 | 22 | $3 |
In context: peer comparison
Among 219 peers in Washington Internal Medicine Physician, average services per provider: 102. This provider delivers 0.4× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
815
Patients
176
Total drug cost
$179,827
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amlodipine Besylate | Generic | 114 | 36 | $969 |
| Atorvastatin Calcium | Generic | 113 | 39 | $1,853 |
| Lisinopril | Generic | 109 | 26 | $1,139 |
| Hydrochlorothiazide | Generic | 71 | 25 | $291 |
| Metformin Hcl | Generic | 71 | 16 | $790 |
| Tamsulosin Hcl | Generic | 57 | 19 | $1,167 |
| Furosemide | Generic | 56 | 15 | $411 |
| Trulicity (Dulaglutide) | Brand | 41 | 0 | $47,638 |
| Gabapentin | Generic | 34 | 0 | $1,558 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 32 | 0 | $595 |
Frequently asked questions
What is Dr. William Harpster's medical specialty?
Dr. William Harpster practices Internal Medicine Physician in Washington, DC.
Where does Dr. William Harpster practice?
Dr. William Harpster practices at 425 2Nd St Nw, Washington, DC 200012003. Office phone: 2025080506.
What is Dr. William Harpster's NPI?
Dr. William Harpster's National Provider Identifier (NPI) is 1689683401, issued by NPPES.
Does Dr. William Harpster accept Medicare assignment?
Yes. Dr. William Harpster accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Harpster commonly perform?
Top Medicare-reported procedures in 2023: Blood glucose (sugar) test performed by hand-held instrument (HCPCS 82962). Source: CMS Medicare Physician & Other Practitioners file.