Susan Mayo, M.D.
NPI 1386696185 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Susan Mayo, M.D. is a Internal Medicine Physician provider in San Francisco, CA (NPI 1386696185).
Provider details
- NPI number
- 1386696185
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 52330 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
203 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 | 134 | $78 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 53 | $78 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 16 | $78 |
Typical Medicare-allowed amounts for these services range $78–$78 (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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 59 | 54 |
| Cephalexin | 35 | 34 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 29 | 23 |
| Nirmatrelvir/Ritonavirbrand: Paxlovid | 24 | 24 |
| Azelastine Hcl | 23 | 20 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 20 | 20 |
| Valacyclovir Hclbrand: Valacyclovir |
Practice location
Mailing address
Additional practice locations (1)
- Po Box 1176Thousand Oaks, CA 91358-0176Phone: (805) 495-1066
Registry dates
- Enumerated
- 2006-05-17
- Last updated
- 2025-05-08
- Certified
- 2025-05-08
Frequently asked questions
- What is Susan Mayo's NPI number?
- Susan Mayo's National Provider Identifier (NPI) is 1386696185, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Susan Mayo's specialty?
- Susan Mayo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Susan Mayo located?
- Susan Mayo's practice location on file with NPPES is 1 California St Ste 2300, San Francisco, CA 94111-5424.
- What is Susan Mayo's phone number?
- The practice phone number listed in the NPPES registry for Susan Mayo is (800) 997-6196.
- Does Susan Mayo accept Medicare?
- Susan Mayo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Susan Mayo's NPI active?
- Yes — Susan Mayo's NPI (1386696185) is active in the NPPES registry as of the last update on 2025-05-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.