Jon Mallen-St. Clair, M.D.
NPI 1134410038 · Plastic Surgery within the Head & Neck (Otolaryngology) Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jon Mallen-St. Clair, M.D. is a Plastic Surgery within the Head & Neck (Otolaryngology) Physician provider in Los Angeles, CA (NPI 1134410038).
Provider details
- NPI number
- 1134410038
- Entity type
- Individual
- Primary specialty
- Plastic Surgery within the Head & Neck (Otolaryngology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
- Plastic Surgery within the Head & Neck (Otolaryngology) PhysicianPrimary207YX0007XLicense A125470 (CA)
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
320 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 116 | $99 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 46 | $140 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 36 | $181 |
| Diagnostic Exam of Voice Box Using a Flexible Endoscope31575 | 33 | $141 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 31 | $62 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-04-26
- Last updated
- 2021-01-21
- Certified
- 2021-01-21
Frequently asked questions
- What is Jon Mallen-St. Clair's NPI number?
- Jon Mallen-St. Clair's National Provider Identifier (NPI) is 1134410038, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jon Mallen-St. Clair's specialty?
- Jon Mallen-St. Clair is listed in the NPPES registry with a primary specialty of Plastic Surgery within the Head & Neck (Otolaryngology) Physician (Allopathic & Osteopathic Physicians).
- Where is Jon Mallen-St. Clair located?
- Jon Mallen-St. Clair's practice location on file with NPPES is 8635 W 3rd St Ste 590w, Los Angeles, CA 90048-6163.
- What is Jon Mallen-St. Clair's phone number?
- The practice phone number listed in the NPPES registry for Jon Mallen-St. Clair is (310) 423-1220.
- Does Jon Mallen-St. Clair accept Medicare?
- Jon Mallen-St. Clair is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jon Mallen-St. Clair's NPI active?
- Yes — Jon Mallen-St. Clair's NPI (1134410038) is active in the NPPES registry as of the last update on 2021-01-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.