John Leary, M.D.
NPI 1891889606 · Specialist · Newport Beach, CA
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Leary, M.D. is a Specialist provider in Newport Beach, CA (NPI 1891889606).
Provider details
- NPI number
- 1891889606
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A36215 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
521 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) |
|---|---|---|
| Ultrasound Study of One Arm Or Leg Veins With Compression and Maneuvers93971 | 130 | $136 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 122 | $62 |
| Ultrasound Study of Arm Or Leg Veins With Compression and Maneuvers93970 | 68 | $211 |
| Injection of Chemical Agent Into Single Incompetent Vein of Leg Using Ultrasound Guidance36465 | 51 | $1,468 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 51 | $117 |
| Injection of Chemical Agent Into Multiple Incompetent Veins of Leg36471 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Semaglutidebrand: Ozempic | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-03
- Last updated
- 2025-09-11
Frequently asked questions
- What is John Leary's NPI number?
- John Leary's National Provider Identifier (NPI) is 1891889606, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Leary's specialty?
- John Leary is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is John Leary located?
- John Leary's practice location on file with NPPES is 180 Newport Center Dr Ste 120, Newport Beach, CA 92660-6996.
- What is John Leary's phone number?
- The practice phone number listed in the NPPES registry for John Leary is (949) 515-9377.
- Does John Leary accept Medicare?
- John Leary is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Leary's NPI active?
- Yes — John Leary's NPI (1891889606) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.