Justin Fields, MD
Justin Fields, MD is an Internal Medicine Physician in Norman, OK, registered under NPI 1003013723. 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 Norman, based on OpenStreetMap data collected Aug 29, 2026. Parking is available about 134 ft away. The nearest transit stop is 0.23 mi away, served by Findlay/Oliver (Norman Regional Hospital). A pharmacy sits 0.32 mi from the entrance (Dave's Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.49 mi away.
Getting here and what is nearby
Parking 69 ft ~1 min
Parking 117 ft ~1 min
Pharmacy Physicians and Surgeons Pharmacy 104 ft ~1 min
Parking 134 ft ~1 min
Restaurant Sonic 770 ft ~3 min
705 North Porter, Norman 73071
Mo-Th 06:00-23:00; Fr-Sa 06:00-24:00; Su 07:00-23:00
Restaurant Braum's 919 ft ~4 min
400 East Robinson Street, 73071
Mo-Su 06:00-22:45
Transit Peters/Johnson 1,002 ft ~4 min
Transit Robinson/Porter 0.22 mi ~5 min
Gas station Conoco 0.22 mi ~5 min
Restaurant McDonald's 0.22 mi ~5 min
351 East Robinson, Norman 73069
24/7; 00:00-23:00
Transit Findlay/Oliver (Norman Regional Hospital) 0.23 mi ~5 min
Coffee Boom-a-rang Diner 0.26 mi ~6 min
Gas station Checkers 0.29 mi ~6 min
Pharmacy Dave's Pharmacy 0.32 mi ~7 min
Coffee Gray Owl Coffee 0.49 mi ~10 min
223 East Gray Street, Norman 73069
Mo-Su 07:00-18:00
Convenience O-yoU STOP 0.49 mi ~10 min
Gas station O-yoU STOP 0.50 mi ~10 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 |
|---|---|---|
| 25774 | OK | Internal Medicine Physician primary |
| 25774 | OK | Pediatrics Physician |
This provider holds licence 25774 issued in OK. 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 - Internal Medicine
- PAC ID
- 7214100726
- Enrollment ID
- I20111028000178
Medicare enrolment is recorded as approved under the provider type Practitioner - Internal 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 Internal Medicine covers
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs. NUCC Health Care Provider Taxonomy, code 207R00000X
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 | |
|---|---|---|---|---|
| 207R00000X | Internal Medicine Physician | 25774 | OK | primary |
| 208000000X | Pediatrics Physician | 25774 | OK |
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 | 1003013723 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 27, 2007 |
| Last updated | Feb 5, 2016 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | MD |
| Practice address |
950 N PORTER SUITE 300 Norman, OK 73071 (405) 329-0121 Fax (405) 292-6099 |
| Mailing address |
1515 N HARVARD AVE STE E Tulsa, OK 74115 |
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 | 0 | 1 | 3 | 7 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 1 | 6 | 7 | 4 |
Sum = 47 · next multiple of 10 = 50 · check digit = 3 · actual last digit = 3
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.