John Nixon, M.D.
NPI 1720465586 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Nixon, M.D. is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1720465586).
Provider details
- NPI number
- 1720465586
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A145812 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 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
132 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 55 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 48 | $99 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 15 | $62 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 14 | $10 |
Typical Medicare-allowed amounts for these services range $9–$99 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 30 | — |
| Atorvastatin Calcium | 25 | 15 |
| Metformin Hcl | 23 | 12 |
| Gabapentin | 20 | — |
| Budesonide/Formoterol Fumaratebrand: Breyna | 18 | — |
| Amlodipine Besylate | 18 | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-04-30
- Last updated
- 2019-12-29
- Certified
- 2019-12-29
Frequently asked questions
- What is John Nixon's NPI number?
- John Nixon's National Provider Identifier (NPI) is 1720465586, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Nixon's specialty?
- John Nixon is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Nixon located?
- John Nixon's practice location on file with NPPES is 1200 N State St, Los Angeles, CA 90033-1029.
- What is John Nixon's phone number?
- The practice phone number listed in the NPPES registry for John Nixon is (323) 226-7556.
- Does John Nixon accept Medicare?
- John Nixon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Nixon's NPI active?
- Yes — John Nixon's NPI (1720465586) is active in the NPPES registry as of the last update on 2019-12-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.