Marc Yudkoff, M.D.
Marc Yudkoff, M.D. is a Clinical Genetics (M.D.) Physician in Philadelphia, PA, registered under NPI 1679589469. This provider registers 4 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 3401 CIVIC CENTER BLVD CHILDREN'S HOSPITAL OF PHILADELPHIA - METABOLISM, Philadelphia, PA 19104. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| MD017296E | PA | Clinical Genetics (M.D.) Physician primary |
| MD017296E | PA | Clinical Biochemical Genetics Physician |
| MD017296E | PA | Pediatrics Physician |
| MD017296E | PA | Developmental - Behavioral Pediatrics… |
This provider holds licence MD017296E issued in PA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Clinical Genetics (M.D.) covers
A clinical geneticist demonstrates competence in providing comprehensive diagnostic, management and counseling services for genetic disorders. NUCC Health Care Provider Taxonomy, code 207SG0201X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207SG0201X | Clinical Genetics (M.D.) Physician Clinical Genetics (M.D.) | MD017296E | PA | primary |
| 207SG0202X | Clinical Biochemical Genetics Physician Clinical Biochemical Genetics | MD017296E | PA | |
| 208000000X | Pediatrics Physician | MD017296E | PA | |
| 2080P0006X | Developmental - Behavioral Pediatrics Physician Developmental - Behavioral Pediatrics | MD017296E | PA |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1679589469 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 31, 2006 |
| Last updated | Apr 19, 2013 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
3401 CIVIC CENTER BLVD CHILDREN'S HOSPITAL OF PHILADELPHIA - METABOLISM Philadelphia, PA 19104 (215) 590-3376 Fax (215) 590-4297 |
| Mailing address |
100 E PENN SQ 9TH FLOOR Philadelphia, PA 19107 |
| Other identifiers |
1518305
(NJ) 000665026 (PA) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 6 | 7 | 9 | 5 | 8 | 9 | 4 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 5 | 9 | 1 | 8 | 9 | 4 | 3 |
Sum = 71 · next multiple of 10 = 80 · check digit = 9 · actual last digit = 9
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.