Christopher Keyes, MD
Christopher Keyes, MD is a Diagnostic Radiology Physician in Royal Oak, MI, registered under NPI 1003505306. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Royal Oak, based on OpenStreetMap data collected Aug 29, 2026. Parking is available about 133 ft away. The nearest transit stop is 0.22 mi away, served by 13 Mile / Woodward (WB). A pharmacy sits 0.34 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.36 mi away.
Getting here and what is nearby
Parking 37 ft ~1 min
Parking 82 ft ~1 min
Parking 133 ft ~1 min
Grocery Woodward Corner Market 530 ft ~3 min
30955 Woodward Avenue, Royal Oak 48073
Mo-Su 07:00-22:00
Transit 13 Mile / Beaumont Hospital (EB) 741 ft ~3 min
Restaurant Bucharest Grill Express 824 ft ~4 min
Transit 13 Mile / Beaumont Hospital (WB) 879 ft ~4 min
Restaurant Panera Bread 0.20 mi ~4 min
30955 Woodward Avenue, Royal Oak 48073
Mo 06:00-22:00; Tu 06:00-21:00; We-Sa 06:00-22:00; Su 07:00-21:00
Restaurant MOD Pizza 0.20 mi ~4 min
30955 Woodward Avenue, Royal Oak 48073
11:00-23:00
Transit 13 Mile / Woodward (WB) 0.22 mi ~5 min
Convenience Mobil Mart 0.22 mi ~5 min
Gas station Mobil 0.23 mi ~5 min
Coffee Lucky Detroit 0.26 mi ~6 min
Gas station shell 0.27 mi ~6 min
30875 Woodward Avenue, Royal Oak 48073
Pharmacy CVS Pharmacy 0.33 mi ~7 min
Pharmacy Walgreens 0.34 mi ~7 min
30852 Woodward Avenue, Royal Oak 48073
Coffee Starbucks 0.36 mi ~8 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 |
|---|---|---|
| 4351050854 | MI | Diagnostic Radiology Physician primary |
This provider holds licence 4351050854 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
- Order And Referring Only - Diagnostic Radiology
- PAC ID
- 5890152797
- Enrollment ID
- I20230608001419
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Diagnostic Radiology. 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 Diagnostic Radiology covers
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease. NUCC Health Care Provider Taxonomy, code 2085R0202X
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 | 1003505306 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 2, 2023 |
| Last updated | Mar 11, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | MD |
| Practice address |
3601 W 13 MILE RD Royal Oak, MI 48073 (248) 898-7266 |
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 | 5 | 0 | 5 | 3 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 0 | 1 | 3 | 0 |
Sum = 34 · next multiple of 10 = 40 · check digit = 6 · actual last digit = 6
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.