James Spencer, M.D.
NPI 1578553145 · Internal Medicine Physician · Kingman, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Spencer, M.D. is a Internal Medicine Physician provider in Kingman, AZ (NPI 1578553145).
Provider details
- NPI number
- 1578553145
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 27918 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
353 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 117 | $75 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 68 | $124 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 66 | $87 |
| Transitional Care Management Services for Problem of High Complexity99496 | 48 | $271 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 32 | $109 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 32 | 25 |
| Atorvastatin Calcium | 32 | 25 |
| Furosemide | 25 | 23 |
| Losartan Potassium | 25 | 17 |
| Pantoprazole Sodium | 24 | 20 |
| Lisinopril | 22 | 16 |
| Amlodipine Besylate | 21 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-25
- Last updated
- 2024-10-07
- Certified
- 2024-10-07
Frequently asked questions
- What is James Spencer's NPI number?
- James Spencer's National Provider Identifier (NPI) is 1578553145, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Spencer's specialty?
- James Spencer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Spencer located?
- James Spencer's practice location on file with NPPES is 2226 Hualapai Mountain Rd, Kingman, AZ 86401-8374.
- What is James Spencer's phone number?
- The practice phone number listed in the NPPES registry for James Spencer is (928) 681-8530.
- Does James Spencer accept Medicare?
- James Spencer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Spencer's NPI active?
- Yes — James Spencer's NPI (1578553145) is active in the NPPES registry as of the last update on 2024-10-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.