William Ross, M.D.
Pain Medicine (Anesthesiology) Physician · Phoenix, AZ
William Ross, M.D. is a pain medicine (anesthesiology) physician with a practice address in Phoenix, Arizona, and NPI 1669783064, issued on Jun 30, 2010. Check the license (Arizona 49953, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- William Ross
- Credential
- M.D.
- Primary taxonomy
- Pain Medicine (Anesthesiology) Physician 207LP2900X
- License number
- 49953 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 645 E Missouri Ave Ste 300, Phoenix, AZ 85012
- Phone
- (602) 262-8917
- Enumerated
- Jun 30, 2010
- Record last updated
- May 9, 2022
- Fax
- (602) 262-8890
- Medicare enrollment
- Enrolled (PECOS I20150811004681); accepts Medicare assignment
- Medical or professional school
- University Of Arizona College Of Medicine, 2010
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pain medicine (anesthesiology) physician records → All 92 in Arizona → Look up another NPI →
Also registered at 645 E Missouri Ave Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brittany Aeschlimann, M.D.Pain Medicine (Anesthesiology) Physician1144682659
- Amalia Aleck, M.D.Anesthesiology Physician1467763284
- Jeanmarie Altieri, CRNACertified Registered Nurse Anesthetist1033214408
- Sean Barney, PA-CPhysician Assistant1629304332
- Carly Bass, RNRegistered Nurse1144749946
- Nicholas Baumler, D.O.Anesthesiology Physician1659542660
Verify William Ross in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 49953Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% more Medicare Part D claims than the average pain medicine (anesthesiology) physician in 2024
3,261 Medicare Part D claims for 495 beneficiaries, against an average of 1,750 among the 2,982 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 1,186 claims were for opioids.
Most prescribed
- Diazepam383 claims
- Baclofen289 claims
- Oxycodone Hcl268 claims
- Hydrocodone-Acetaminophen228 claims
- Gabapentin206 claims
- Pregabalin188 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $810.93
41 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 2,789 providers of this specialty with any payment received $3,225.41 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.
Bills Medicare through one group practice
- Neurological Associates OF TucsonTucson, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Ross among 92 pain medicine (anesthesiology) physician records in Arizona
William Ross, M.D. is one of 92 pain medicine (anesthesiology) physician records with a practice address in Arizona. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 66% of them.
- NPI issued2010 · 66% of these records are older, 29% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2010 · median 2006 among the 68 with a school on file
- Record last updated2022 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LP2900X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pain Medicine (Anesthesiology) Physician providers in Arizona
There are 92 pain medicine (anesthesiology) physician records in Arizona.
All 92 in Arizona → Every provider in Phoenix → Pain Medicine (Anesthesiology) Physician nationwide →
The 8 pain medicine (anesthesiology) physician records with the nearest ZIP codes
- Brittany Aeschlimann, M.D.Phoenix, AZ 850121144682659
- Shafik Boyaji, MDPhoenix, AZ 850121710290861
- David Currie, M.D.Phoenix, AZ 850121811316490
- Mark Kallgren, MDPhoenix, AZ 850121700841541
- Leonor Maderazo, MDPhoenix, AZ 850121467423640
- David Towns, MDPhoenix, AZ 850151326116278
- Ruchir Gupta, MDPhoenix, AZ 850161265668453
- Sarang Koushik, M.D.Phoenix, AZ 850081417391368
Common questions
What is William Ross, M.D.'s NPI number?
William Ross, M.D.'s National Provider Identifier (NPI) is 1669783064, issued on Jun 30, 2010. An NPI identifies a provider in billing; it is not a license.
Where is William Ross, M.D. located?
The NPPES record lists a practice address at 645 E Missouri Ave Ste 300, Phoenix, AZ, 85012. Phone: (602) 262-8917. Providers update this record themselves, so call before visiting.
How can I verify William Ross, M.D.'s license?
NPPES lists Arizona license number 49953, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Ross, M.D. prescribe under Medicare Part D?
In 2024, William Ross, M.D. had 3,261 Medicare Part D claims for 495 beneficiaries; the average among pain medicine (anesthesiology) physician prescribers was 1,750. Part D covers Medicare prescriptions only.
What is William Ross, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.