Douglas Farmer, MD
NPI 1679508923 · Transplant Surgery Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Farmer, MD is a Transplant Surgery Physician provider in Los Angeles, CA (NPI 1679508923).
Provider details
- NPI number
- 1679508923
- Entity type
- Individual
- Primary specialty
- Transplant Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A49584 (CA)
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
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
1,116 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 914 | $127 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 73 | $124 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 43 | $153 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 43 | $140 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 28 | $84 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$179 across 5 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
- 2006-07-12
- Last updated
- 2019-12-30
- Certified
- 2019-12-30
Frequently asked questions
- What is Douglas Farmer's NPI number?
- Douglas Farmer's National Provider Identifier (NPI) is 1679508923, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Farmer's specialty?
- Douglas Farmer is listed in the NPPES registry with a primary specialty of Transplant Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Farmer located?
- Douglas Farmer's practice location on file with NPPES is 200 Ucla Medical Plz Ste 214, Los Angeles, CA 90095-8344.
- What is Douglas Farmer's phone number?
- The practice phone number listed in the NPPES registry for Douglas Farmer is (310) 267-9612.
- Does Douglas Farmer accept Medicare?
- Douglas Farmer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Farmer's NPI active?
- Yes — Douglas Farmer's NPI (1679508923) is active in the NPPES registry as of the last update on 2019-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.