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DR. ADAM PAUL CARTER WARREN MD, MPH
NPI 1205164761
Orthopaedic Surgery - Orthopaedic Trauma in Oakland, CA

Active since November 20, 2009PECOS EnrolledAccepts Medicare Assignment
5700 TELEGRAPH AVE STE 100, OAKLAND, CA 94609(877) 400-0128(510) 400-5118 Get Directions Write a Review

NPPES record last updated: November 6, 2025. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Nov 6, 2025, Jun 11, 2025, Mar 7, 2024 (3 updates tracked since 2024).

About Dr. Adam Paul Carter Warren Md, Mph NPPES

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

DR. ADAM PAUL CARTER WARREN MD, MPH (NPI 1205164761) is an individual orthopaedic trauma provider in Oakland, California, licensed in California (A103633) and active in the NPI registry since November 2009. He is enrolled in Medicare PECOS, maintains a secondary practice location in Antioch, and is a graduate of Stanford University School Of Medicine (2004).

NPPES Registry Identity

NPI1205164761
Entity TypeIndividualMale
Primary Taxonomy207XX0801X
Provider Legal NameDR. ADAM PAUL CARTER WARRENCredential: MD, MPH
Location Address5700 TELEGRAPH AVE STE 100Oakland, CA 94609-1710
Mailing Address4096 Piedmont Ave # 301Oakland, CA 94611-5221 · (877) 400-0128 · Fax (510) 400-5118
Phone(877) 400-0128
Fax(510) 400-5118
Sole ProprietorNo
Medical School CMSStanford University School Of MedicineGraduated 2004
Enumeration DateNovember 20, 2009
Last NPPES UpdateNovember 6, 20253 updates tracked since enumeration
NPPES CertifiedNovember 6, 2025
✔ NPI 1205164761 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOrthopaedic Surgery · Orthopaedic TraumaAllopathic & Osteopathic Physicians
Taxonomy Code207XX0801X
License✔ Licensed in CA · A103633
Definition
Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, orthopaedic trauma surgeons deal with the evaluation and management of acute orthopaedic injuries, evaluation and treatment of post-traumatic deformities and nonunions, acute and delayed reconstruction of pelvic and acetabular fractures, as well as osteotomy in the adult hip for treatment of hip arthritis.
Also ListedOrthopaedic SurgeryTaxonomy 207X00000X · License MD446107 (PA), A103633 (CA)
5700 TELEGRAPH AVE STE 100, Oakland, CA 94609
Open in Google Maps ↗

Secondary Practice Location 1

Location 14053 Lone Tree WayAntioch, CA 94531-6210 · Phone (510) 204-1844 · Fax (925) 506-7728

Other Identifiers 6

Medicaid055447200MD
Other1610980PA · Gateway
Other30120394PA · Amerihealth Mercy - Wmg
Other418504PA · Upmc
Other2716643PA · Highmark Blue Shield
Medicaid102733306PA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Adam Paul Carter Warren Md, Mph 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 ID9537315817
PECOS Enrollment IDI20131025001562
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.

Medicare Billing Reassignments

6

Medicare enrollment records show Adam Warren reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Adam Warren MD Inc, A Professional Corporation
Same address
Orthopaedic Trauma
5700 TELEGRAPH AVE STE 100
Oakland, CA 94609
  • Reassigned Medicare billing, California enrollment
NPI 1659774495 (510) 400-5117
Sutter Bay Medical Foundation
5.0 mi
Multi-Specialty
12 CAMINO ENCINAS
Orinda, CA 94563
  • Reassigned Medicare billing, California enrollment
  • 4,479 clinicians in this Medicare group
NPI 1366898538 (510) 204-8180
Northbay Healthcare Group
31 mi
General Acute Care Hospital
1200 B GALE WILSON BLVD
Fairfield, CA 94533
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Northbay Physicians Surgery Center, LLC
  • 516 clinicians in this Medicare group
NPI 1821147786 (707) 646-5000
County Of Stanislaus
69 mi
Clinic/Center
1209 WOODROW AVE, STE. B-10
Modesto, CA 95350
  • Reassigned Medicare billing, California enrollment
  • 59 clinicians in this Medicare group
NPI 1093910275 (209) 558-5312
Stanislaus Orthopaedic And Sports Medicine Clinic
71 mi
Specialist
609 E ORANGEBURG AVE
Modesto, CA 95350
  • Reassigned Medicare billing, California enrollment
  • 17 clinicians in this Medicare group
NPI 1669505160 (209) 572-3224
Orion Orthopaedic Trauma, Inc
71 mi
Orthopaedic Trauma
1335 COFFEE RD STE 100
Modesto, CA 95355
  • Reassigned Medicare billing, California enrollment
  • 6 clinicians in this Medicare group
NPI 1093137051 (209) 524-4649

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 8

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.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
66 services65 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
58 services45 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
58 services44 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
44 services44 patients
Treatment of broken neck of thigh bone with bone implant 27245
This procedure involves repairing a fractured thigh bone by inserting a bone implant. The implant helps stabilize the bone, allowing it to heal correctly. It's performed under anesthesia and requires a hospital stay for recovery.
27 services26 patients
Injection of anesthetic agent and/or steroid into other nerve or branch 64450
This procedure involves injecting an anesthetic agent or steroid into a specific nerve or its branch. The goal is to relieve pain by reducing inflammation and numbing the area. It is commonly used for chronic pain management. The process is safe and usually quick.
20 services20 patients

Other Providers at the Same Location NPPES 3

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

MR. DARREN WILLIAM GUILLAUME PA-C, CS
Physician Assistant (Surgical)
5700 TELEGRAPH AVE STE 100
OAKLAND, CA 94609
Alameda County (510) 594-9411
BAY AREA COMPREHENSIVE SPINE AND SPORTS MEDICAL GROUP INC
Physical Medicine & Rehabilitation (Sports Medicine)
5700 TELEGRAPH AVE STE 100
OAKLAND, CA 94609
Alameda County (510) 463-4700
ADAM WARREN MD INC, A PROFESSIONAL CORPORATION
Orthopaedic Surgery (Orthopaedic Trauma)
5700 TELEGRAPH AVE STE 100
OAKLAND, CA 94609
Alameda County (510) 400-5117

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 Adam Warren's NPI number?

The NPI number for Adam Warren is 1205164761. It was assigned to this individual provider in the NPPES registry on November 20, 2009.

Where is Adam Warren located?

Adam Warren practices at 5700 Telegraph Ave Ste 100, Oakland, CA 94609. The listed phone number is (877) 400-0128.

What is Adam Warren's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Orthopaedic Trauma, with taxonomy code 207XX0801X.

Is Adam Warren enrolled in Medicare?

Yes. Adam Warren 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.

Which organizations bill Medicare for Adam Warren's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Adam Warren reassigns Medicare benefits to 6 organizations: Adam Warren MD Inc, A Professional Corporation (Oakland, CA), Sutter Bay Medical Foundation (Orinda, CA), Northbay Healthcare Group (Fairfield, CA), County Of Stanislaus (Modesto, CA), Stanislaus Orthopaedic And Sports Medicine Clinic (Modesto, CA) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Adam Warren's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Adam Warren was last updated on November 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.