Ryan Mayer, M.D.
NPI 1255793527 · Orthopaedic Trauma Physician · Pomona, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Mayer, M.D. is a Orthopaedic Trauma Physician provider in Pomona, CA (NPI 1255793527).
Provider details
- NPI number
- 1255793527
- Entity type
- Individual
- Primary specialty
- Orthopaedic Trauma PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A178874 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
276 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 96 | $178 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 53 | $132 |
| Application of Stress By Physician for Joint Imaging77071 | 34 | $61 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 34 | $77 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 19 | $94 |
| Treatment of Broken Neck of Thigh Bone With Bone Implant27245 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$688 across 15 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-03-24
- Last updated
- 2025-08-06
- Certified
- 2025-08-06
Frequently asked questions
- What is Ryan Mayer's NPI number?
- Ryan Mayer's National Provider Identifier (NPI) is 1255793527, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Mayer's specialty?
- Ryan Mayer is listed in the NPPES registry with a primary specialty of Orthopaedic Trauma Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan Mayer located?
- Ryan Mayer's practice location on file with NPPES is 160 E Artesia St Ste 255, Pomona, CA 91767-2921.
- What is Ryan Mayer's phone number?
- The practice phone number listed in the NPPES registry for Ryan Mayer is (095) 964-3469.
- Does Ryan Mayer accept Medicare?
- Ryan Mayer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Mayer's NPI active?
- Yes — Ryan Mayer's NPI (1255793527) is active in the NPPES registry as of the last update on 2025-08-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.