NPPES file of Aug 9, 2026

Chayce William Hartung, MD

Student in an Organized Health Care Education/Training Program · Merced, CA

Chayce William Hartung, MD is a student in an organized health care education/training program with a practice address in Merced, California, and NPI 1336778844, issued on Apr 6, 2020. Check the license (California A187954, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1336778844
Name
Chayce William Hartung
Credential
MD
Primary taxonomy
Student in an Organized Health Care Education/Training Program 390200000X
License number
A187954 CA
Self-reported in NPPES; status is on the state search
Practice location
315 E 13TH St, Merced, CA 95341
Phone
(209) 564-4500
Enumerated
Apr 6, 2020
Record last updated
Aug 16, 2023
Fax
(209) 564-4598
Medicare enrollment
Enrolled (PECOS I20230810002841); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 315 E 13TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ma Mildred Bebero, FNPPrimary Care Nurse Practitioner1841757598
  2. Ha Bui, MDStudent in an Organized Health Care Education/Training Program1083243554
  3. Simrit Dyal, MDFamily Medicine Physician1578192043
  4. Amanda Gibson, FNP-CFamily Nurse Practitioner1023266590
  5. Mary Hintenach, FNPFamily Nurse Practitioner1023145679
  6. Richard Hsu, DOFamily Medicine Physician1306234232

Verify Chayce William Hartung in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license A187954
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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16.6 times the Medicare Part D claims of the average student in an organized health care education/training program in 2024

3,068 Medicare Part D claims for 535 beneficiaries, against an average of 185 among the 59,748 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 121 claims were for opioids.

  1. Chayce Hartung3,068
  2. Specialty average185

Most prescribed

  1. Atorvastatin Calcium176 claims
  2. Levothyroxine Sodium133 claims
  3. Losartan Potassium129 claims
  4. Lisinopril104 claims
  5. Amlodipine Besylate102 claims
  6. Hydrocodone-Acetaminophen90 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.

Bills Medicare through one group practice

  1. Permanente Medical Group IncFresno, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

81 student in an organized health care education/training program records list a practice address in Merced

They are 81 of the 2,836 NPPES records with a practice address in Merced, and 40,652 student in an organized health care education/training program records in California.

Other student in an organized health care education/training program records in California

  1. Sanad A'BasiFresno, CA1720915770
  2. Alexander Aabedi, MDSan Francisco, CA1245971480
  3. Andre AabediPomona, CA1891582102
  4. Natalie Aabodi, DMDPomona, CA1851085187
  5. Dalal Aago, MDEl Cajon, CA1639863103
  6. Megan Aaronson, MD, MSCRLos Angeles, CA1386272102
  7. Manas AavulaPomona, CA1972496644
  8. Joann AbadTulare, CA1639745433
  9. Gioux Ian Abad Mangulabnan, THERAPISTBerkeley, CA1710442702
  10. Sharon AbadaSan Francisco, CA1003492844

Common questions

What is Chayce William Hartung, MD's NPI number?

Chayce William Hartung, MD's National Provider Identifier (NPI) is 1336778844, issued on Apr 6, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Chayce William Hartung, MD located?

The NPPES record lists a practice address at 315 E 13TH St, Merced, CA, 95341. Phone: (209) 564-4500. Providers update this record themselves, so call before visiting.

How can I verify Chayce William Hartung, MD's license?

NPPES lists California license number A187954, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Chayce William Hartung, MD prescribe under Medicare Part D?

In 2024, Chayce William Hartung, MD had 3,068 Medicare Part D claims for 535 beneficiaries; the average among student in an organized health care education/training program prescribers was 185. 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.