Susan Marron, MD
NPI 1922006618 · Hospitalist Physician · Irvine, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Susan Marron, MD is a Hospitalist Physician provider in Irvine, CA (NPI 1922006618).
Provider details
- NPI number
- 1922006618
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 15638 (NV)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
543 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 282 | $114 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 137 | $76 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 96 | $109 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 28 | $167 |
Typical Medicare-allowed amounts for these services range $76–$167 (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 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 31 | 25 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 29 | 29 |
| Apixabanbrand: Eliquis | 26 | 13 |
| Atorvastatin Calcium | 20 | 17 |
| Amlodipine Besylate | 19 | 18 |
| Metoprolol Tartrate | 17 | 12 |
Practice location
Mailing address
Additional practice locations (1)
- 1155 Mill StReno, NV 89502-1576Phone: (775) 982-7878Fax: (775) 982-4196
Registry dates
- Enumerated
- 2005-07-07
- Last updated
- 2026-01-01
- Certified
- 2026-01-01
Frequently asked questions
- What is Susan Marron's NPI number?
- Susan Marron's National Provider Identifier (NPI) is 1922006618, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Susan Marron's specialty?
- Susan Marron is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Susan Marron located?
- Susan Marron's practice location on file with NPPES is 11 Technology Dr, Irvine, CA 92618-2302.
- What is Susan Marron's phone number?
- The practice phone number listed in the NPPES registry for Susan Marron is (949) 923-3200.
- Does Susan Marron accept Medicare?
- Susan Marron is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Susan Marron's NPI active?
- Yes — Susan Marron's NPI (1922006618) is active in the NPPES registry as of the last update on 2026-01-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.