Zachary Calvin Bowles, MD
Emergency Medicine Physician · Little Rock, AR
Zachary Calvin Bowles, MD is an emergency medicine physician with a practice address in Little Rock, Arkansas, and NPI 1497140370, issued on Mar 30, 2015. Check the license on the Arkansas State Medical Board; the Medicare figures below come from public CMS files.
- Name
- Zachary Calvin Bowles
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A159259 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4301 W Markham St, Little Rock, AR 72205
- Phone
- (501) 686-5356
- Enumerated
- Mar 30, 2015
- Record last updated
- Apr 18, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190906001017); accepts Medicare assignment
- Medical or professional school
- University Of Missouri, Columbia School Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 447 in Arkansas → Look up another NPI →
Also registered at 4301 W Markham St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Hashane AbeyagunawardeneStudent in an Organized Health Care Education/Training Program1033040365
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- Ahmed Abuabdou, M.D.Internal Medicine Physician1245547702
- Dana Abulez, MSEStudent in an Organized Health Care Education/Training Program1710716915
- Erin Adams, MDStudent in an Organized Health Care Education/Training Program1225822406
Verify Zachary Calvin Bowles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArkansas State Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% more Medicare Part D claims than the average emergency medicine physician in 2024
238 Medicare Part D claims for 172 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 20 claims were for opioids.
Most prescribed
- Ondansetron Odt24 claims
- Amoxicillin-Clavulanate Potass15 claims
- Cefpodoxime Proxetil15 claims
- Cephalexin15 claims
- Hydrocodone-Acetaminophen14 claims
- Famotidine12 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.
The MIPS final score for 2023 (Medicare payment program): 80 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $37.51
1 payment: food and beverage; the largest payer was Smith+Nephew, Inc. The 12,335 providers of this specialty with any payment received $953.79 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
- San Joaquin Emergency Medical AssociatesMerced, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zachary Calvin Bowles among 447 emergency medicine physician records in Arkansas
Zachary Calvin Bowles, MD is one of 447 emergency medicine physician records with a practice address in Arkansas. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 70% of them.
- NPI issued2015 · 70% of these records are older, 26% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2015 · median 2011 among the 301 with a school on file
- Record last updated2019 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Arkansas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
139 emergency medicine physician records list a practice address in Little Rock
They are 139 of the 13,172 NPPES records with a practice address in Little Rock, and 447 emergency medicine physician records in Arkansas.
All 447 in Arkansas → Every provider in Little Rock → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- C.e. Ballard, M.D.Little Rock, AR 722051568571677
- Gregory Bledsoe, M.D.Little Rock, AR 722051871559559
- Loretta Depalo, M.D.Little Rock, AR 722051962457390
- Richard Doncer, MDLittle Rock, AR 722051962455212
- Lane England, M.D.Little Rock, AR 722051215964077
- Karla Jones-Montgomery, MDLittle Rock, AR 722051700893690
- Jay Marks, MDLittle Rock, AR 722051881708154
- Charles Mason, M.D.Little Rock, AR 722051346232774
Common questions
What is Zachary Calvin Bowles, MD's NPI number?
Zachary Calvin Bowles, MD's National Provider Identifier (NPI) is 1497140370, issued on Mar 30, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Calvin Bowles, MD located?
The NPPES record lists a practice address at 4301 W Markham St, Little Rock, AR, 72205. Phone: (501) 686-5356. Providers update this record themselves, so call before visiting.
How can I verify Zachary Calvin Bowles, MD's license?
Search the Arkansas State Medical Board at https://armedicalboard.adh.arkansas.gov/public/verify/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Zachary Calvin Bowles, MD prescribe under Medicare Part D?
In 2024, Zachary Calvin Bowles, MD had 238 Medicare Part D claims for 172 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Zachary Calvin Bowles, MD's MIPS final score?
The 2023 MIPS final score is 80 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.