William Greeley, M.D.
William Greeley, M.D. is a Pediatric Anesthesiology Physician in Philadelphia, PA, registered under NPI 1023129111. 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 34TH STREET & CIVIC CENTER BLVD SUITE 9329, 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 |
|---|---|---|
| MD028118E | PA | Pediatric Anesthesiology Physician primary |
| MD028118E | PA | Anesthesiology Physician |
| MD028118E | PA | Pediatrics Physician |
| MD028118E | PA | Pediatric Critical Care Medicine Physician |
This provider holds licence MD028118E 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 Pediatric Anesthesiology covers
An anesthesiologist who has had additional skill and experience in and is primarily concerned with the anesthesia, sedation, and pain management needs of infants and children. A pediatric anesthesiologist generally provides services including the evaluation of complex medical problems in infants and children when surgery is necessary, planning and care for children before and after surgery, pain control, anesthesia and sedation for any procedures out of the operating room such as MRI, CT scan, and radiation therapy. NUCC Health Care Provider Taxonomy, code 207LP3000X
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 | |
|---|---|---|---|---|
| 207LP3000X | Pediatric Anesthesiology Physician Pediatric Anesthesiology | MD028118E | PA | primary |
| 207L00000X | Anesthesiology Physician | MD028118E | PA | |
| 208000000X | Pediatrics Physician | MD028118E | PA | |
| 2080P0203X | Pediatric Critical Care Medicine Physician Pediatric Critical Care Medicine | MD028118E | 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 | 1023129111 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 31, 2006 |
| Last updated | Mar 29, 2013 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
34TH STREET & CIVIC CENTER BLVD SUITE 9329 Philadelphia, PA 19104 (215) 590-1858 Fax (215) 590-1415 |
| Mailing address |
100 E PENN SQ THE WANAMAKER BUILDING, 9TH FLOOR Philadelphia, PA 19107 |
| Other identifiers |
189532EJL
· MEDICARE PTAN ANESTHESIOLOGY (PA) 0016005540 (PA) 189532EMD · MEDICARE PTAN CRITICAL CARE MEDICINE (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 | 0 | 2 | 3 | 1 | 2 | 9 | 1 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 4 | 3 | 2 | 2 | 9 | 1 | 2 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
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.