Robert Wiliam John Ryan, M.D.
Neurological Surgery Physician · Fresno, CA
Robert Wiliam John Ryan, M.D. is a neurological surgery physician with a practice address in Fresno, California, and NPI 1720366024, issued on Aug 3, 2011. Check the license (California A116656, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert Wiliam John Ryan
- Credential
- M.D.
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- A116656 CA
Self-reported in NPPES; status is on the state search - Practice location
- 45 E River Park PL W, Fresno, CA 93720
- Phone
- (559) 320-0530
- Enumerated
- Aug 3, 2011
- Record last updated
- Jul 2, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (559) 320-0532
- Medicare enrollment
- Enrolled (PECOS I20170620000563); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 929 in California → Look up another NPI →
Also registered at 45 E River Park PL W
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jordan Bevan, PA-CPhysician Assistant1124577408
- Armen Choulakian, MDNeurological Surgery Physician1861694242
- Sorabh Datta, MDInternal Medicine Physician1174151492
- Ian Johnson, MDNeurological Surgery Physician1407936115
- Marne Johnson, NP-CNurse Practitioner1972058584
- Georgiana Koko, NPNurse Practitioner1205171261
Verify Robert Wiliam John Ryan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A116656Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average neurological surgery physician in 2024
48 Medicare Part D claims for 16 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D.
Most prescribed
- Clopidogrel18 claims
- Levetiracetam18 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $489.68
9 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 5,377 providers of this specialty with any payment received $14,925.58 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Virginia Mason Medical CenterSeattle, WA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Robert Wiliam John Ryan among 929 neurological surgery physician records in California
Robert Wiliam John Ryan, M.D. is one of 929 neurological surgery physician records with a practice address in California. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 68% of them.
- NPI issued2011 · 68% of these records are older, 30% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2005 · median 2005 among the 612 with a school on file
- Record last updated2014 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurological Surgery Physician providers in California
There are 929 neurological surgery physician records in California.
All 929 in California → Every provider in Fresno → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Henry Aryan, MD, FACS, FAANSFresno, CA 937201992867329
- Adam Brant, M.D.Fresno, CA 937201811998248
- Armen Choulakian, MDFresno, CA 937201861694242
- Ian Johnson, MDFresno, CA 937201407936115
- Yu-Hung Kuo, MDFresno, CA 937201902085657
- Mark Levy, MDFresno, CA 937201548243389
- Robert Macdonald, MDFresno, CA 937201053476887
- Justin Massengale, M.D.Fresno, CA 937201003096736
Common questions
What is Robert Wiliam John Ryan, M.D.'s NPI number?
Robert Wiliam John Ryan, M.D.'s National Provider Identifier (NPI) is 1720366024, issued on Aug 3, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Robert Wiliam John Ryan, M.D. located?
The NPPES record lists a practice address at 45 E River Park PL W, Fresno, CA, 93720. Phone: (559) 320-0530. Providers update this record themselves, so call before visiting.
How can I verify Robert Wiliam John Ryan, M.D.'s license?
NPPES lists California license number A116656, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert Wiliam John Ryan, M.D. prescribe under Medicare Part D?
In 2024, Robert Wiliam John Ryan, M.D. had 48 Medicare Part D claims for 16 beneficiaries; the average among neurological surgery physician prescribers was 172. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.