DOUGLAS OBRIEN
NPI 1235158239
Physician Assistant in Greenbrae, CA

Active since July 19, 2006PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
250 BON AIR RD, GREENBRAE, CA 94904(415) 925-7000 Get Directions Write a Review

NPPES record last updated: March 3, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Douglas Obrien NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DOUGLAS OBRIEN (NPI 1235158239) is an individual physician assistant in Greenbrae, California, licensed in California (PA13578) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1994).

NPPES Registry Identity

NPI1235158239
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameDOUGLAS OBRIEN
Location Address250 BON AIR RDGreenbrae, CA 94904-1702
Mailing Address3746 Foothill Blvd # B140Glendale, CA 91214-1740 · (310) 445-5999
Sole ProprietorNo
Medical School CMSOtherGraduated 1994
Enumeration DateJuly 19, 2006
Last NPPES UpdateMarch 3, 2021
NPPES CertifiedMarch 3, 2021
NPI 1235158239 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License Licensed in CA · PA13578
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
250 BON AIR RD, Greenbrae, CA 94904

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Douglas Obrien is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7315907193
PECOS Enrollment IDI20230224000314
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 11

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes 99310
A follow-up nursing facility visit is a routine check-up that typically lasts about 35 minutes. During this visit, your health status is evaluated, any changes in your condition are noted, and necessary adjustments to your care plan are made. It's an essential part of maintaining your health.
2,001 services254 patients
Removal of muscle and/or tissue, 20.0 sq cm or less 11043
This procedure involves the surgical removal of a specified area (20.0 sq cm or less) of muscle and/or tissue. It's typically done to treat conditions like tumors, infections, or injuries. Local or general anesthesia ensures comfort. Recovery time varies.
1,606 services236 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
1,177 services283 patients
Removal of bone, 20.0 sq cm or less 11044
The procedure involves the surgical removal of a section of bone, up to 20.0 square cm in size. This may be necessary due to various reasons such as injury, infection, or to treat a disease. The process aims to alleviate pain, enhance mobility, or prevent the spread of disease.
617 services84 patients
Removal of muscle and/or tissue, each additional 20.0 sq cm or less 11046
This procedure involves the removal of muscle and/or tissue, typically to treat disease or injury. An additional 20.0 square cm or less of tissue may be removed if necessary. The process is performed by a skilled medical professional to ensure your safety and recovery.
546 services65 patients
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308
A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.
391 services223 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94904 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$104.67 typical visit price
range $69.07 – $202.63
Typical copayment $26.16 (range $17.26 – $50.65)
Most-billed visit code 99203
Established Patient
$85.00 typical visit price
range $23.44 – $166.64
Typical copayment $21.25 (range $5.86 – $41.66)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability96
Improvement Activities40

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Registered Nurse (Psychiatric/Mental Health)
250 BON AIR RD
GREENBRAE, CA 94904
Psychiatry & Neurology (Psychiatry)
250 BON AIR RD
GREENBRAE, CA 94904
Internal Medicine
250 BON AIR RD, 3RD FLOOR
GREENBRAE, CA 94904
Psychiatry & Neurology (Psychiatry)
250 BON AIR RD
GREENBRAE, CA 94904
Rehabilitation Practitioner
250 BON AIR RD
GREENBRAE, CA 94904
Counselor (Mental Health)
250 BON AIR RD
GREENBRAE, CA 94904
Advanced Practice Midwife
250 BON AIR RD
GREENBRAE, CA 94904
Registered Nurse
250 BON AIR RD
GREENBRAE, CA 94904

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Douglas Obrien's NPI number?

The NPI number for Douglas Obrien is 1235158239. It was assigned to this individual provider in the NPPES registry on July 19, 2006.

Where is Douglas Obrien located?

Douglas Obrien practices at 250 Bon Air Rd, Greenbrae, CA 94904. The listed phone number is (415) 925-7000.

What is Douglas Obrien's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Douglas Obrien enrolled in Medicare?

Yes. Douglas Obrien is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Douglas Obrien was last updated on March 3, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.