Susan Ahart, MD, MA
NPI 1407924475 · Psychiatry Physician · Santa Rosa, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Susan Ahart, MD, MA is a Psychiatry Physician provider in Santa Rosa, CA (NPI 1407924475).
Provider details
- NPI number
- 1407924475
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MA
- Sex
- Female
- Sole proprietor
- Yes
- License
- G80538 (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
19 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
339 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) |
|---|---|---|
| Psychotherapy With Evaluation and Management Visit, 1 Hour90838 | 209 | $126 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 130 | $148 |
Typical Medicare-allowed amounts for these services range $126–$148 (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 · 48 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Olanzapine | 116 | 14 |
| Olanzapinebrand: Olanzapine Odt | 93 | 11 |
| Clonazepam | 87 | — |
| Trazodone Hcl | 81 | 12 |
| Propranolol Hcl | 73 | — |
| Clozapine | 70 | — |
| Lurasidone Hcl | 68 | — |
| Divalproex Sodium | 62 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$38 across 2 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
- 2006-11-30
- Last updated
- 2017-01-16
Frequently asked questions
- What is Susan Ahart's NPI number?
- Susan Ahart's National Provider Identifier (NPI) is 1407924475, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Susan Ahart's specialty?
- Susan Ahart is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Susan Ahart located?
- Susan Ahart's practice location on file with NPPES is 1049 4th St, Santa Rosa, CA 95404-4345.
- What is Susan Ahart's phone number?
- The practice phone number listed in the NPPES registry for Susan Ahart is (707) 522-8641.
- Does Susan Ahart accept Medicare?
- Susan Ahart is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Susan Ahart's NPI active?
- Yes — Susan Ahart's NPI (1407924475) is active in the NPPES registry as of the last update on 2017-01-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.