Derek Holecek, MD, DDS
Derek Holecek, MD, DDS is a provider specialising in Oral and Maxillofacial Surgery (Dentist) in Ann Arbor, MI, registered under NPI 1003307281. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Ann Arbor, based on OpenStreetMap data collected Aug 30, 2026. Parking is available about 0.37 mi away at U of M Lot N22 Service Center. The nearest transit stop is 644 ft away, served by University Hospital (Taubman). If you arrive early, there is a coffee shop 0.26 mi away.
Getting here and what is nearby
Coffee Grand Grounds 62 ft ~1 min
Restaurant Get Away N’ Play Café 64 ft ~1 min
Restaurant Subway 75 ft ~1 min
Mo-Fr 06:30-16:00; PH off
Transit 352 ft ~2 min
Transit University Hospital (Mott) 499 ft ~2 min
Restaurant Markley Dining Hall 579 ft ~3 min
Mo-Fr 07:00-10:00, 11:00-14:00, 17:00-20:00
Transit University Hospital (Taubman) 644 ft ~3 min
Hotel Med Inn 978 ft ~4 min
Parking 0.21 mi ~5 min
Coffee Victors 0.26 mi ~6 min
Mo-Th 07:00-01:00; Fr 07:00-23:00; Sa 09:00-23:00; Su 09:00-01:00
Parking U of M Lot N21 Service Center 0.36 mi ~8 min
Palmer Drive
Parking U of M Lot N22 Service Center 0.37 mi ~8 min
Palmer Drive
Convenience Strickland's Market 0.40 mi ~9 min
1352 Geddes Avenue
Hotel The Vanguard Ann Arbor 0.44 mi ~9 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 2901022607 | MI | Oral and Maxillofacial Surgery (Dentist) primary |
| 2901022607 | MI | Oral & Maxillofacial Surgery (D.M.D.) |
This provider holds licence 2901022607 issued in MI. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Oral Surgery
- PAC ID
- 3375974868
- Enrollment ID
- I20240712002023
Medicare enrolment is recorded as approved under the provider type Practitioner - Oral Surgery. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Oral and Maxillofacial Surgery covers
The specialty of dentistry which includes the diagnosis, surgical and adjunctive treatment of diseases, injuries and defects involving both the functional and esthetic aspects of the hard and soft tissues of the oral and maxillofacial region. NUCC Health Care Provider Taxonomy, code 1223S0112X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 1223S0112X | Oral and Maxillofacial Surgery (Dentist) Oral and Maxillofacial Surgery | 2901022607 | MI | primary |
| 204E00000X | Oral & Maxillofacial Surgery (D.M.D.) | 2901022607 | MI |
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 | 1003307281 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 23, 2018 |
| Last updated | Aug 26, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | MD, DDS |
| Practice address |
1500 E MEDICAL CENTER DR Ann Arbor, MI 48109 (734) 936-4000 |
| Mailing address |
3621 S STATE ST Ann Arbor, MI 48108 |
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 | 0 | 3 | 3 | 0 | 7 | 2 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 0 | 5 | 2 | 7 |
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.