Clinical Biochemical Genetics Physician providers in the U.S.
70 NPPES records list clinical biochemical genetics physician as their primary taxonomy; District of Columbia and Massachusetts have the most per resident. 21 of them appear in the Medicare Part D prescriber file: a registry record is not proof of an active practice.
What taxonomy code 207SG0202X means
207SG0202X is the National Uniform Claim Committee code for Medical Genetics, Clinical Biochemical Genetics, in the grouping Allopathic & Osteopathic Physicians. 70 NPPES records list it as their primary taxonomy (file of Aug 9, 2026).
A clinical biochemical geneticist demonstrates competence in performing and interpreting biochemical analyses relevant to the diagnosis and management of human genetic diseases and is a consultant regarding laboratory diagnosis of a broad range of inherited disorders.
Source: NUCC Health Care Provider Taxonomy code set, definition as NUCC publishes it (nucc.org); counts from CMS NPPES.
Most per resident: the 8 highest
Source: CMS NPPES, primary taxonomy 207SG0202X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.
Boston has the most, 5
Source: CMS NPPES, primary taxonomy 207SG0202X by practice city, file of Aug 9, 2026.
All 26 states and D.C. with records, by state
| State | Records | Per 100,000 |
|---|---|---|
| California | 8 | 0.0 |
| Colorado | 1 | 0.0 |
| Connecticut | 2 | 0.1 |
| District of Columbia | 2 | 0.3 |
| Florida | 5 | 0.0 |
| Georgia | 2 | 0.0 |
| Indiana | 1 | 0.0 |
| Maine | 1 | 0.1 |
| Maryland | 6 | 0.1 |
| Massachusetts | 6 | 0.1 |
| Michigan | 4 | 0.0 |
| Nevada | 1 | 0.0 |
| New Jersey | 1 | 0.0 |
| State | Records | Per 100,000 |
|---|---|---|
| New Mexico | 1 | 0.0 |
| New York | 5 | 0.0 |
| Ohio | 2 | 0.0 |
| Oklahoma | 1 | 0.0 |
| Oregon | 1 | 0.0 |
| Pennsylvania | 3 | 0.0 |
| Rhode Island | 1 | 0.1 |
| South Carolina | 1 | 0.0 |
| Tennessee | 2 | 0.0 |
| Texas | 4 | 0.0 |
| Utah | 1 | 0.0 |
| Virginia | 1 | 0.0 |
| Washington | 6 | 0.1 |
In federal data
- NUCC code207SG0202X · Medical Genetics
- Size rank551st of 688 specialties by records (0% of all)
- In its family4th of 7 Medical Genetics codes, 5% of the family
- Part D prescribers21 (30% of records)
- Part D claims51 a year per prescriber, on average (412th of 496)
- Industry payments20 physicians paid $27K in 2024, $1K each on average
- Concentration6 states hold half of all records
Source: CMS NPPES; Medicare Part D Prescriber PUF; CMS Open Payments 2024. Presence in these files is not a quality judgment.
A sample of clinical biochemical genetics physician records
- Kimberly Chapman, M.D.Los Angeles, CA1194915306
- Divya Vats, MDLos Angeles, CA1154515963
- Michael Kaback, MDDel Mar, CA1720217292
- Bruce Barshop, M.D., PH.D.San Diego, CA1477624237
- David Dimmock, M.D.San Diego, CA1275796419
- Jose Abdenur, M.D.Orange, CA1154428027
- Jaime Barea, M.D.Madera, CA1437471810
- Kristina Cusmano-Ozog, MDStanford, CA1902080021
- Chun-Hui Tsai, MDAurora, CO1588749220
- Michele Spencer-Manzon, M.D.New Haven, CT1861667065
- Teodoro Jerves Serrano, MDNew Haven, CT1376098095
- Iskren Menkovic, PH.DWashington, DC1497562292
Registry order, not a ranking. Search by name to find one provider.
Common questions
Why is Clinical Biochemical Genetics Physician a thin NUCC code in NPPES?
Only 70 NPIs list Clinical Biochemical Genetics Physician as primary taxonomy across 27 states (peak California, 8). That is 551st of 688 NUCC codes by headcount. Thin codes are still searchable by NPI; do not treat the low count as a quality signal.
Do the few Clinical Biochemical Genetics Physician NPIs in Open Payments look unusual?
CMS Open Payments 2024 lists 20 paid Clinical Biochemical Genetics Physician physicians totaling $27K (56 payments; average $1K, 197th of 470 by average). Presence is not a quality judgment; thin specialties often have sparse payment rows.
How much Part D prescribing does this specialty do?
Among Clinical Biochemical Genetics Physician NPIs, 21 appear in the Medicare Part D Prescriber PUF (average 51 claims and $1.0M drug cost per prescriber; 412th of 496 specialties by average claims). Non-prescribing clinicians in the same NUCC code are still in NPPES.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy (nucc.org); Medicare Part D Prescriber PUF; CMS Open Payments 2024. Counts are self-designated primary taxonomy, not board certification.
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.