NPPES file of Aug 9, 2026

Nagui Achamallah, M.D.

Psychiatry Physician · Modesto, CA

Nagui Achamallah, M.D. is a psychiatry physician with a practice address in Modesto, California, and NPI 1629057393, issued on Jan 11, 2006. Check the license (California A48988, as entered in NPPES) on the Medical Board of California; 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
1629057393
Name
Nagui Achamallah
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
A48988 CA
Self-reported in NPPES; status is on the state search
Practice location
1601 Cummins Dr Ste D, Modesto, CA 95358
Phone
(510) 900-3125
Enumerated
Jan 11, 2006
Record last updated
Dec 13, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20070212000444); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 1601 Cummins Dr Ste D

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

  1. Alex Chandler, M.D.Psychiatry Physician1497013288
  2. Jaimini Chauhan-James, M.D.Psychiatry Physician1700152618
  3. Jessy JosephPsychiatry Physician1457768764
  4. Carolyn Lanam, M.D.Emergency Medicine Physician1942664552
  5. Anthony Mazzarulli, MDPsychiatry Physician1801090006
  6. Amanda McCormick, PA-CPhysician Assistant1689123010

Verify Nagui Achamallah in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A48988    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
Open 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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82% fewer Medicare Part D claims than the average psychiatry physician in 2024

181 Medicare Part D claims for 35 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.

  1. Nagui Achamallah181
  2. Specialty average1,000

Most prescribed

  1. Sertraline Hcl35 claims
  2. Trazodone Hcl20 claims
  3. Duloxetine Hcl18 claims
  4. Bupropion Xl17 claims
  5. Buspirone Hcl17 claims
  6. Hydroxyzine Hcl11 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 2 group practices

  1. Alliance For Wellness IncPanorama City, CA
  2. Cep America - Psychiatry PCWalnut Creek, CA

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

Psychiatry Physician providers in California

There are 8,673 psychiatry physician records in California.

All 8,673 in California → Every provider in Modesto →

Other psychiatry physician records in California

  1. Nancy Aaen, MDNapa, CA1609816669
  2. Criselda Abad-Santos, M.D.Woodland Hills, CA1760461826
  3. Mekabiz Abaian, MDSan Bernardino, CA1891090163
  4. Brenda Abarca, MDTorrance, CA1407485527
  5. Pilar Abascal, M.D.Los Angeles, CA1730528191
  6. Michele Abbasi, M.D.Westlake Village, CA1093940330
  7. Zohaib AbbasiMartinez, CA1013392224
  8. Sandy Abdelkedous, MDFresno, CA1306093109
  9. Nancy Abdelmalak, M.D.Elk Grove, CA1912137498
  10. Ezzat Abdelmalek, M.DDana Point, CA1992828826

Common questions

What is Nagui Achamallah, M.D.'s NPI number?

Nagui Achamallah, M.D.'s National Provider Identifier (NPI) is 1629057393, issued on Jan 11, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Nagui Achamallah, M.D. located?

The NPPES record lists a practice address at 1601 Cummins Dr Ste D, Modesto, CA, 95358. Phone: (510) 900-3125. Providers update this record themselves, so call before visiting.

How can I verify Nagui Achamallah, M.D.'s license?

NPPES lists California license number A48988, 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 Nagui Achamallah, M.D. prescribe under Medicare Part D?

In 2024, Nagui Achamallah, M.D. had 181 Medicare Part D claims for 35 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.