Clinical Cytogenetics Physician providers in the U.S.
95 NPPES records list clinical cytogenetics physician as their primary taxonomy; New Mexico and Vermont have the most per resident. 1 of them appear in the Medicare Part D prescriber file: a registry record is not proof of an active practice.
What taxonomy code 207SC0300X means
207SC0300X is the National Uniform Claim Committee code for Medical Genetics, Clinical Cytogenetics, in the grouping Allopathic & Osteopathic Physicians. 95 NPPES records list it as their primary taxonomy (file of Aug 9, 2026).
A clinical cytogeneticist demonstrates competence in providing laboratory diagnostic and clinical interpretive services dealing with cellular components, particularly chromosomes, associated with heredity.
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 207SC0300X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.
Boston has the most, 8
Source: CMS NPPES, primary taxonomy 207SC0300X by practice city, file of Aug 9, 2026.
All 27 states and D.C. with records, by state
| State | Records | Per 100,000 |
|---|---|---|
| Alabama | 1 | 0.0 |
| Arizona | 5 | 0.1 |
| California | 23 | 0.1 |
| Colorado | 4 | 0.1 |
| Connecticut | 1 | 0.0 |
| District of Columbia | 1 | 0.1 |
| Florida | 3 | 0.0 |
| Georgia | 1 | 0.0 |
| Illinois | 1 | 0.0 |
| Kentucky | 1 | 0.0 |
| Maryland | 2 | 0.0 |
| Massachusetts | 9 | 0.1 |
| Mississippi | 2 | 0.1 |
| Nebraska | 1 | 0.1 |
| State | Records | Per 100,000 |
|---|---|---|
| Nevada | 1 | 0.0 |
| New Mexico | 6 | 0.3 |
| New York | 7 | 0.0 |
| North Carolina | 3 | 0.0 |
| Ohio | 2 | 0.0 |
| Oregon | 3 | 0.1 |
| Pennsylvania | 2 | 0.0 |
| South Carolina | 1 | 0.0 |
| Tennessee | 3 | 0.0 |
| Texas | 5 | 0.0 |
| Vermont | 1 | 0.2 |
| Virginia | 3 | 0.0 |
| Washington | 3 | 0.0 |
In federal data
- NUCC code207SC0300X · Medical Genetics
- Size rank522nd of 688 specialties by records (0% of all)
- In its family3rd of 7 Medical Genetics codes, 6.8% of the family
- Part D prescribers1 (1.1% of records)
- Part D claims27 a year per prescriber, on average (453rd of 496)
- Industry payments4 physicians paid $6K in 2024, $1K each on average
- Concentration5 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 cytogenetics physician records
- Fady Mikhail, MD, PHDBirmingham, AL1518705722
- Eduardo Cantu, PHDPhoenix, AZ1700078201
- Theresa Brown, PH.D.Phoenix, AZ1154309565
- John McGill, PH.D.Phoenix, AZ1396723573
- Christine Stephenson, PH.D.Phoenix, AZ1740472224
- Guang LiuChandler, AZ1639823453
- Fabiola Quintero-Rivera, MDLos Angeles, CA1891344578
- Shi-Qi Wu, M.D.Los Angeles, CA1407835119
- Mehdi Jamehdor, MDLos Angeles, CA1205995891
- Sung-Hae Kang, PH.D.Los Angeles, CA1225592793
- Joyce Murata-Collins, PH.D.Duarte, CA1467644203
- Abbas Padeganeh, PHD, FACMGDuarte, CA1861990988
Registry order, not a ranking. Search by name to find one provider.
Common questions
Why is Clinical Cytogenetics Physician a thin NUCC code in NPPES?
Only 95 NPIs list Clinical Cytogenetics Physician as primary taxonomy across 27 states (peak California, 23). That is 522nd 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 Cytogenetics Physician NPIs in Open Payments look unusual?
CMS Open Payments 2024 lists 4 paid Clinical Cytogenetics Physician physicians totaling $6K (11 payments; average $1K, 192nd 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 Cytogenetics Physician NPIs, 1 appear in the Medicare Part D Prescriber PUF (average 27 claims and $1.6M drug cost per prescriber; 453rd 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.