NPPES file of Aug 9, 2026

Liana Diants, M.D.

Hospitalist Physician · Redlands, CA

Liana Diants, M.D. is a hospitalist physician with a practice address in Redlands, California, and NPI 1619105608, issued on Jun 29, 2009. Check the license (California A106644, 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
1619105608
Name
Liana Diants
Credential
M.D.
Primary taxonomy
Hospitalist Physician 208M00000X
License number
A106644 CA
Self-reported in NPPES; status is on the state search
Practice location
2 W Fern Ave, Redlands, CA 92373
Phone
(909) 793-3311
Enumerated
Jun 29, 2009
Record last updated
Dec 21, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20091026000516); 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 2 W Fern Ave

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

  1. Nkeiruka Abanobi, NPWomen's Health Nurse Practitioner1982009007
  2. Hanan Abu Alnaaj, MDFamily Medicine Physician1235319385
  3. James Agee, M.D.Urology Physician1851345722
  4. Arun Agrawal, D.O.Anesthesiology Physician1184677650
  5. Amanda Aguilera, M.D.Diagnostic Radiology Physician1679782049
  6. Onyinye Ahamba, M.DHospitalist Physician1164835237

Verify Liana Diants in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A106644
    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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14% fewer Medicare Part D claims than the average hospitalist physician in 2024

447 Medicare Part D claims for 176 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 20 claims were for opioids.

  1. Liana Diants447
  2. Specialty average521

Most prescribed

  1. Furosemide37 claims
  2. Ciprofloxacin Hcl24 claims
  3. Prednisone22 claims
  4. Lisinopril20 claims
  5. Metoprolol Tartrate18 claims
  6. Pantoprazole Sodium18 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. Southern California Permanente Medical GroupRiverside, CA

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

Liana Diants among 3,099 hospitalist physician records in California

Liana Diants, M.D. is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 39% of them.

  • NPI issued2009 · 39% of these records are older, 56% newer
  • In a Medicare fileYes · 90% of these records are
  • In the CMS Doctors and Clinicians fileYes · 81% of these records are
  • Graduated1996 · median 2010 among the 2,505 with a school on file
  • Record last updated2021 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hospitalist Physician providers in California

There are 3,099 hospitalist physician records in California.

The 8 hospitalist physician records with the nearest ZIP codes

  1. Marvin Brauer, M.D.Redlands, CA 923731043219314
  2. Linh Khuu, M.D.Redlands, CA 923731568751584
  3. Jin Hee Kim, M.D.Redlands, CA 923731124310263
  4. John Lee, M.D.Redlands, CA 923731477870186
  5. Jose Makalinao, MDRedlands, CA 923731659460327
  6. Feras Naeem, M.D.Redlands, CA 923731356517288
  7. Sameh Naseib, M.D.Redlands, CA 923731124076344
  8. Barbara Nelson, M.D.Redlands, CA 923731114966389

Common questions

What is Liana Diants, M.D.'s NPI number?

Liana Diants, M.D.'s National Provider Identifier (NPI) is 1619105608, issued on Jun 29, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Liana Diants, M.D. located?

The NPPES record lists a practice address at 2 W Fern Ave, Redlands, CA, 92373. Phone: (909) 793-3311. Providers update this record themselves, so call before visiting.

How can I verify Liana Diants, M.D.'s license?

NPPES lists California license number A106644, 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 Liana Diants, M.D. prescribe under Medicare Part D?

In 2024, Liana Diants, M.D. had 447 Medicare Part D claims for 176 beneficiaries; the average among hospitalist physician prescribers was 521. 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.