Doctor profile · Federal record
Dr. Margaret Shaffer, MD
Anatomic Pathology & Clinical Pathology Physician (CMS: Pathology) · Anatomic Pathology & Clinical Pathology Physician · Washington, DC
- NPI 1851507719
- MIPS 75.0 / 100 · 2023
- 37 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
5255 Loughboro RD Nw
Washington, DC 200162633
(202) 537-4455 - Mailing address
-
6201 Greenleigh Ave
Middle River, MD 212202004
Credentials & registration
- NPI registered
- May 2007 — 19 yrs on file
- Profile last updated
- December 22, 2021
- Year of graduation
- 1989 — 37 yrs since
- Specialty taxonomy
- 207ZP0102X — NUCC code
- State licenses (2)
- Maryland #D79890 · District of Columbia #MD20064
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1851507719. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,928
Distinct HCPCS
10
Medicare allowed
$132,055
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 950 | 486 | $40 | |
88341 |
Special stained specimen slides to examine tissue, each additional procedure | 516 | 136 | $31 | |
88173 |
Evaluation of fine needle aspirate with interpretation and report | 316 | 102 | $76 | |
88172 |
Evaluation of fine needle aspirate | 195 | 63 | $39 | |
88304 |
Pathology examination of tissue using a microscope, moderately low complexity | 190 | 168 | $12 | |
88342 |
Special stained specimen slides to examine tissue, initial procedure | 190 | 160 | $38 | |
88112 |
Cell examination of specimen, selective cellular enhancement technique | 188 | 175 | $30 | |
88307 |
Pathology examination of tissue using a microscope, moderately high complexity | 183 | 110 | $90 | |
88360 |
Microscopic genetic analysis of tumor, manual | 58 | 23 | $45 | |
88302 |
Pathology examination of tissue using a microscope | 37 | 35 | $8 |
In context: peer comparison
Among 13 peers in this city , average services per provider: 142. This provider delivers 21× the peer median.Frequently asked questions
What is Dr. Margaret Shaffer's medical specialty?
Dr. Margaret Shaffer practices Anatomic Pathology & Clinical Pathology Physician in Washington, DC.
Where does Dr. Margaret Shaffer practice?
Dr. Margaret Shaffer practices at 5255 Loughboro RD Nw, Washington, DC 200162633. Office phone: 2025374455.
What is Dr. Margaret Shaffer's NPI?
Dr. Margaret Shaffer's National Provider Identifier (NPI) is 1851507719, issued by NPPES.
Does Dr. Margaret Shaffer accept Medicare assignment?
Dr. Margaret Shaffer does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. Margaret Shaffer commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Special stained specimen slides to examine tissue, each additional procedure (HCPCS 88341); Evaluation of fine needle aspirate with interpretation and report (HCPCS 88173). Source: CMS Medicare Physician & Other Practitioners file.