Anthony Patterson Merrill, DO
Gastroenterology Physician · Glendale, AZ
Anthony Patterson Merrill, DO is a gastroenterology physician with a practice address in Glendale, Arizona, and NPI 1730399304, issued on May 23, 2007. Check the license (Arizona 005947, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Anthony Patterson Merrill
- Credential
- DO
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 005947 AZ
R938 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 20100 N 51St Ave Ste F620, Glendale, AZ 85308
- Phone
- (623) 376-6328
- Enumerated
- May 23, 2007
- Record last updated
- Jan 16, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (623) 566-6454
- Medicare enrollment
- Enrolled (PECOS I20120809000263); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 403 in Arizona → Look up another NPI →
Also registered at 20100 N 51St Ave Ste F620
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Khushbir Bath, M.DGastroenterology Physician1417204363
- Vikram Singh, M.D.Gastroenterology Physician1942401807
Verify Anthony Patterson Merrill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 005947Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average gastroenterology physician in 2024
746 Medicare Part D claims for 334 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Omeprazole193 claims
- Pantoprazole Sodium82 claims
- Sod Sulf-Potass Sulf-Mag Sulf56 claims
- Gavilyte-C52 claims
- Gavilyte-G48 claims
- Linzess46 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: $3,743.30
152 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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
- Arizona Gastrointestinal Associates PLCGlendale, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Anthony Patterson Merrill among 403 gastroenterology physician records in Arizona
Anthony Patterson Merrill, DO is one of 403 gastroenterology physician records with a practice address in Arizona. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 59% of them.
- NPI issued2007 · 59% of these records are older, 31% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2006 · median 2001 among the 295 with a school on file
- Record last updated2020 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Arizona
There are 403 gastroenterology physician records in Arizona.
All 403 in Arizona → Every provider in Glendale → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Khushbir Bath, M.DGlendale, AZ 853081417204363
- Stephanie Martinez Hawthorne, M.D.Glendale, AZ 853081003872037
- Sukhdeep Padda, MDGlendale, AZ 853081437143872
- Jalpa Patel, MDGlendale, AZ 853081902257462
- Vikram Singh, M.D.Glendale, AZ 853081942401807
- Nooman Gilani, M.DGlendale, AZ 853061134227390
- Akash Nabh, M.D.Glendale, AZ 853061437325313
- Arun Pillai, M.D.Glendale, AZ 853061336107994
Common questions
What is Anthony Patterson Merrill, DO's NPI number?
Anthony Patterson Merrill, DO's National Provider Identifier (NPI) is 1730399304, issued on May 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Anthony Patterson Merrill, DO located?
The NPPES record lists a practice address at 20100 N 51St Ave Ste F620, Glendale, AZ, 85308. Phone: (623) 376-6328. Providers update this record themselves, so call before visiting.
How can I verify Anthony Patterson Merrill, DO's license?
NPPES lists Arizona license number 005947, 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 Anthony Patterson Merrill, DO prescribe under Medicare Part D?
In 2024, Anthony Patterson Merrill, DO had 746 Medicare Part D claims for 334 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.