John Gray, M.D.
John Gray, M.D. is a provider specialising in Urgent Care Clinic/Center in Lakewood, CO, registered under NPI 1518187186. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 255 UNION BLVD SUITE 300, Lakewood, CO 80228. 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 |
|---|---|---|
| 27554 | CO | Urgent Care Clinic/Center primary |
| 27554 | CO | Occupational Medicine Physician |
This provider holds licence 27554 issued in CO. 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 - Preventive Medicine
- PAC ID
- 0143311779
- Enrollment ID
- I20070810000204
Medicare enrolment is recorded as approved under the provider type Practitioner - Preventive Medicine. 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 Urgent Care covers
Definition to come... NUCC Health Care Provider Taxonomy, code 261QU0200X
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 | |
|---|---|---|---|---|
| 261QU0200X | Urgent Care Clinic/Center Urgent Care | 27554 | CO | primary |
| 2083X0100X | Occupational Medicine Physician Occupational Medicine | 27554 | CO |
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 | 1518187186 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 26, 2007 |
| Last updated | Nov 14, 2013 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | M.D. |
| Practice address |
255 UNION BLVD SUITE 300 Lakewood, CO 80228 (303) 986-9610 Fax (303) 683-9392 |
| Mailing address |
1153 BERGEN PKWY # M218 Evergreen, CO 80439 |
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 | 5 | 1 | 8 | 1 | 8 | 7 | 1 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 5 | 2 | 8 | 2 | 8 | 5 | 1 | 7 |
Sum = 64 · next multiple of 10 = 70 · 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.