NPPES file of Aug 9, 2026

Zan Ian Lewis, M.D.

Orthopaedic Surgery Physician · Santa Ana, CA

Zan Ian Lewis, M.D. is an orthopaedic surgery physician with a practice address in Santa Ana, California, and NPI 1275502478, issued on Mar 17, 2006. Check the license (California G23867, 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
1275502478
Name
Zan Ian Lewis
Credential
M.D.
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License number
G23867 CA
Self-reported in NPPES; status is on the state search
Practice location
1200 N Tustin Ave, Santa Ana, CA 92705
Phone
(714) 558-7365
Enumerated
Mar 17, 2006
Record last updated
Jul 13, 2026
Fax
(714) 541-0722
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest orthopaedic surgery physician records → All 2,276 in California → Look up another NPI →

Also registered at 1200 N Tustin Ave

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

  1. Sanford Chen, M.D.Ophthalmology Physician1427051994
  2. Larry Danzig, M.D.Orthopaedic Surgery Physician1932178258
  3. Kenneth Grabow, MDPain Medicine (Anesthesiology) Physician1629089529
  4. Haled Hajdari, DDSGeneral Practice Dentistry1154511145
  5. Richard Hill, M.D.Ophthalmology Physician1255482055
  6. Lee Ingersoll, DDSEndodontics1447454202

Verify Zan Ian Lewis in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G23867    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

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94% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024

22 Medicare Part D claims, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D.

  1. Zan Lewis22
  2. Specialty average346

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.

Zan Ian Lewis among 2,276 orthopaedic surgery physician records in California

Zan Ian Lewis, M.D. is one of 2,276 orthopaedic surgery physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.

  • NPI issued2006 · 10% of these records are older, 46% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileNo · 59% of these records are
  • Record last updated2026 · 66% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery Physician providers in California

There are 2,276 orthopaedic surgery physician records in California.

All 2,276 in California → Every provider in Santa Ana → Orthopaedic Surgery Physician nationwide →

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Larry Danzig, M.D.Santa Ana, CA 927051932178258
  2. Michael Esposito, M.D.Santa Ana, CA 927051285678755
  3. Ronald Glousman, M.D.Santa Ana, CA 927051104897289
  4. Sheridon GrovesSanta Ana, CA 927051073738712
  5. Arthur Leupold, M.D.Santa Ana, CA 927051538274063
  6. Steven Ma, M.D.Santa Ana, CA 927051720140494
  7. Howard Marans, M.D.Santa Ana, CA 927051093713513
  8. A Moheimani, M.D.Santa Ana, CA 927051639253131

Common questions

What is Zan Ian Lewis, M.D.'s NPI number?

Zan Ian Lewis, M.D.'s National Provider Identifier (NPI) is 1275502478, issued on Mar 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Zan Ian Lewis, M.D. located?

The NPPES record lists a practice address at 1200 N Tustin Ave, Santa Ana, CA, 92705. Phone: (714) 558-7365. Providers update this record themselves, so call before visiting.

How can I verify Zan Ian Lewis, M.D.'s license?

NPPES lists California license number G23867, 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 Zan Ian Lewis, M.D. prescribe under Medicare Part D?

In 2024, Zan Ian Lewis, M.D. had 22 Medicare Part D claims; the average among orthopaedic surgery physician prescribers was 346. 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.