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Edit this profileAt a glance
- 250 Bon Air Rd, Greenbrae, CA 94904
About Douglas Obrien
Douglas Obrien is a physician assistant based in Greenbrae, CA. Medicare claims data shows Douglas provided 7,088 services to 1,505 patients. The services billed most often include subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes, removal of muscle and/or tissue, 20.0 sq cm or less, and subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes. The provider's National Provider Identifier (NPI) is 1235158239.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (415) 925-7000
- Email not available
Practice Locations
250 BON AIR RD
Greenbrae, CA 94904
Procedures Most Often Billed to Medicare
7,088 services · 1,505 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of muscle and/or tissue, 20.0 sq cm or less | Procedure | 11043 |
1,606 | More than most peers in Physician Assistant |
| Removal of bone, 20.0 sq cm or less | Procedure | 11044 |
617 | More than most peers in Physician Assistant |
| Removal of muscle and/or tissue, each additional 20.0 sq cm or less | Procedure | 11046 |
546 | More often than most peers in Physician Assistant |
| Removal of bone, each additional 20.0 sq cm or less | Procedure | 11047 |
387 | Too few peers to compare |
| Removal of skin and tissue, 20.0 sq cm or less | Procedure | 11042 |
68 | As often as other peers in Physician Assistant |
| Application of chemical to stop tissue regrowth in wound | Procedure | 17250 |
27 | As often as other peers in Physician Assistant |
| Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | Office visit | 99310 |
2,001 | More than most peers in Physician Assistant |
| Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | Office visit | 99309 |
1,177 | More often than most peers in Physician Assistant |
| Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more | Office visit | 99308 |
391 | More often than most peers in Physician Assistant |
| Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes | Office visit | 99305 |
192 | More often than most peers in Physician Assistant |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other physician assistants at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 31 related providers in 4 groups
Other physician assistants in Greenbrae 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1994 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of muscle and/or tissue, 20.0 sq cm or less 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Douglas Obrien's specialty?
Douglas Obrien is a physician assistant in Greenbrae, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Douglas Obrien?
Douglas Obrien is listed at 250 Bon Air Rd, Greenbrae, CA 94904. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Douglas Obrien?
The number on file is (415) 925-7000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Douglas Obrien?
Douglas Obrien's National Provider Identifier is 1235158239. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Douglas Obrien's education?
Douglas Obrien attended Other, graduating in 1994. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Douglas Obrien have?
Douglas Obrien has 32 years experience. Calculated from a graduation year of 1994, reported in the CMS National Downloadable File.
CMS public data
What is Douglas Obrien known for?
According to Medicare billing data, Douglas Obrien performs procedures including removal of muscle and/or tissue, 20.0 sq cm or less, removal of bone, 20.0 sq cm or less and removal of muscle and/or tissue, each additional 20.0 sq cm or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Douglas Obrien's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Douglas Obrien. If this is you, claiming it is free.
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