Spencer Drotman, M.D.
NPI 1578906665 · Anesthesiology Physician · Greenbrae, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Spencer Drotman, M.D. is a Anesthesiology Physician provider in Greenbrae, CA (NPI 1578906665).
Provider details
- NPI number
- 1578906665
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD463943 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
291 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) |
|---|---|---|
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 60 | $43 |
| Ultrasonic Guidance for Blood Vessel Access76937 | 57 | $14 |
| Anesthesia for X-Ray on Artery of Brain, Heart, Or Chest01926 | 23 | $310 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 22 | $127 |
| Insertion of Probe in Esophagus for Heart Ultrasound93313 | 22 | $11 |
| Anesthesia for Lens Surgery00142 | 21 | $125 |
| Anesthesia for Electroshock Therapy |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$20 across 1 record (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
Additional practice locations (1)
- 3401 N Broad StPhiladelphia, PA 19140-5103Phone: (215) 707-3326Fax: (215) 707-8028
Registry dates
- Enumerated
- 2013-04-09
- Last updated
- 2020-04-08
- Certified
- 2020-04-08
Frequently asked questions
- What is Spencer Drotman's NPI number?
- Spencer Drotman's National Provider Identifier (NPI) is 1578906665, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Spencer Drotman's specialty?
- Spencer Drotman is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Spencer Drotman located?
- Spencer Drotman's practice location on file with NPPES is 250 Bon Air Rd, Greenbrae, CA 94904-1702.
- What is Spencer Drotman's phone number?
- The practice phone number listed in the NPPES registry for Spencer Drotman is (415) 925-7100.
- Does Spencer Drotman accept Medicare?
- Spencer Drotman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Spencer Drotman's NPI active?
- Yes — Spencer Drotman's NPI (1578906665) is active in the NPPES registry as of the last update on 2020-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.