Mark Bayer, M.D.
NPI 1346275278 · Emergency Medicine Physician · La Quinta, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Bayer, M.D. is a Emergency Medicine Physician provider in La Quinta, CA (NPI 1346275278).
Provider details
- NPI number
- 1346275278
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A34160 (CA)
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
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
1,011 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 581 | $98 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 363 | $66 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 37 | $8 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 17 | $80 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 13 | $134 |
Typical Medicare-allowed amounts for these services range $8–$134 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dexamethasone | 162 | 160 |
| Ipratropium Bromide | 88 | 87 |
| Diclofenac Sodium | 78 | 77 |
| Doxycycline Hyclate | 65 | 65 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 63 | 63 |
| Azithromycin | 62 | 62 |
| Mupirocin | 59 | 55 |
| Prednisone |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2016-02-25
Frequently asked questions
- What is Mark Bayer's NPI number?
- Mark Bayer's National Provider Identifier (NPI) is 1346275278, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Bayer's specialty?
- Mark Bayer is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Bayer located?
- Mark Bayer's practice location on file with NPPES is 45280 Seeley Dr, La Quinta, CA 92253-6834.
- What is Mark Bayer's phone number?
- The practice phone number listed in the NPPES registry for Mark Bayer is (760) 610-7210.
- Does Mark Bayer accept Medicare?
- Mark Bayer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Bayer's NPI active?
- Yes — Mark Bayer's NPI (1346275278) is active in the NPPES registry as of the last update on 2016-02-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.