NPI registry status
Active
2026 NPPES data Neuroradiology Physician NPI 1396021648 M.D.
Verify on CMS → Roy Bryan, M.D.
Neuroradiology Physician in Thousand Oaks, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 2,019 in Neuroradiology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Industry payments
$123.78
1 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Roy Bryan, M.D. is a Neuroradiology Physician in Thousand Oaks, California, listed in the federal CMS National Provider Identifier registry.
- Likely
- board-certified (heuristic)
- #185
- Neuroradiology Physician rank among California specialties
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Roy Bryan, M.D.
Federal registry listing with board-eligibility signals — verify credentials with the state medical board before clinical decisions.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1396021648), first enumerated 11/01/2011.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
7 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$123.78 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Roy Bryan, M.D.'s individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1396021648 · Neuroradiology Physician
NPI-10 · ENUM-MID · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1396021648
- ENUM-MID 2011
- TAX-NARROW 2,019
- RX-NONE No Part D
- BOOK-THIN 247 in California
- PHOTO-ENUM Dinesh Sundarakumar,… · 2011
✓
Board certification likely (heuristic, not verified)
Roy Bryan, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 7 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Roy Bryan, M.D.?
Quality data not reportedPrimary specialty
Neuroradiology Physician
Specialty distribution in California
How Neuroradiology Physician compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Neuroradiology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1396021648 |
|---|---|
| Specialty | Neuroradiology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 11/01/2011 |
Hospital and facility affiliations
Facilities where Roy Bryan, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
According to CMS billing records, Roy Bryan, M.D. is affiliated with 7 Medicare-billing facilities across 3 states.
Integris Ambulatory Care Corporation
Oklahoma City, OK
Northside Radiology Associates LLC
San Francisco, CA
Phoebe Physician Group Inc
San Diego, CA
Riverbend Medical Group Inc
Springfield, MA
Signature Healthcare Medical Group Inc
Brockton, MA
Sonoran Radiology Ltd
Santa Barbara, CA
Ucla Radiology Medical Group
Los Angeles, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Roy Bryan, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$124
Largest payer
ABBVIE INC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Roy Bryan, M.D.. To verify Roy Bryan, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Neuroradiology Physician Overview
How Roy Bryan, M.D. fits within the Neuroradiology Physician landscape nationally.
2,019
Neuroradiology Physician Providers in US
51
States with Neuroradiology Physician
228
Avg Claims per Provider
Nationwide Neuroradiology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Bryan, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2011)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Neuroradiology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Bryan.
One of 247 Neuroradiology Physician providers enrolled in California, 5 are shown here.
Dr. Daniel Adran
MD
Pasadena, CA
Dr. Jamshid Ahmadi
M.D.
Los Angeles, CA
Dr. Kenneth Albertson
M.D.
San Diego, CA
Dr. Matthew Amans
M.D.
San Francisco, CA
Dr. Avanti Ambekar
M.D.
San Mateo, CA
Compare Neuroradiology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Roy Bryan, M.D.'s specialty? ▼
Roy Bryan, M.D. specializes in Neuroradiology Physician and practices in Thousand Oaks, California. Credentials: M.D..
Where is Roy Bryan, M.D. located? ▼
Roy Bryan, M.D. is located at 100 MOODY CT STE 200, Thousand Oaks, CA, 91360. Phone: (310) 301-6800.
What is Roy Bryan, M.D.'s NPI number? ▼
Roy Bryan, M.D.'s National Provider Identifier (NPI) is 1396021648, issued on 11/01/2011.
How many Neuroradiology Physician providers are there in the US? ▼
There are 2,019 Neuroradiology Physician providers across 51 states in the US. The average Neuroradiology Physician provider writes 228 Medicare Part D claims per year.
Does Roy Bryan, M.D. accept Medicare? ▼
Roy Bryan, M.D. appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Roy Bryan, M.D.'s credentials? ▼
Roy Bryan, M.D.'s NPI is 1396021648 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.