NPPES file of Aug 9, 2026

Mark Lott, M.D.

Gastroenterology Physician · Inglewood, CA

Mark Lott, M.D. is a gastroenterology physician with a practice address in Inglewood, California, and NPI 1821192139, issued on Sep 8, 2006. Check the license (California G85987, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821192139
Name
Mark Lott
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
G85987 CA
Self-reported in NPPES; status is on the state search
Practice location
501 E Hardy St, Inglewood, CA 90301
Phone
(310) 671-7010
Enumerated
Sep 8, 2006
Record last updated
Dec 29, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(310) 680-6855
Medicaid ID
GR0027410 CA
Medicare enrollment
Enrolled (PECOS I20120402000356); accepts Medicare assignment
Medical or professional school
Howard University College Of Medicine, 1982
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 501 E Hardy St

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

  1. Immaculate Anebere, NPFamily Nurse Practitioner1720697683
  2. Sabrina BerkheimerBehavior Analyst1609635440
  3. Marjan Chegounchi, MDInternal Medicine Physician1285660456
  4. Eric Chew, PA-CMedical Physician Assistant1104972462
  5. Jack Farahi, M.D.Specialist1225034358
  6. Phillip Frankel, M.D.Specialist1962408070

Verify Mark Lott in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G85987
    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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6% fewer Medicare Part D claims than the average gastroenterology physician in 2024

759 Medicare Part D claims for 362 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.

  1. Mark Lott759
  2. Specialty average811

Most prescribed

  1. Sod Sulf-Potass Sulf-Mag Sulf140 claims
  2. Famotidine114 claims
  3. Gavilyte-G104 claims
  4. Omeprazole52 claims
  5. Pantoprazole Sodium36 claims
  6. Mesalamine Er30 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): 22.1 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.

  1. Qualityout of 100 · 30% of the final score0.0
  2. Costout of 100 · 30%73.6
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $671.71

32 payments; by number, the most common kind was food and beverage; the largest payer was Salix Pharmaceuticals, a division of Bausch Health US, LLC. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Lott$671.71
  2. Specialty average$5,015.95

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

  1. Coast Gastroenterology A Medical Group Inc.Inglewood, CA

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

Mark Lott among 2,140 gastroenterology physician records in California

Mark Lott, M.D. is one of 2,140 gastroenterology physician records with a practice address in California. 83% 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 7% of them.

  • NPI issued2006 · 7% of these records are older, 48% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated1982 · median 2002 among the 1,538 with a school on file
  • Record last updated2014 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in California

There are 2,140 gastroenterology physician records in California.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Eugene Christian, EUGENE CHRISTIANInglewood, CA 903011326266537
  2. Steven Lerner, M.D.Inglewood, CA 903011518059237
  3. Stephen Parnell, M.D.Inglewood, CA 903011609968320
  4. Beverly Chen, M.D.Redondo Beach, CA 902771154622454
  5. Tu Tran, M.D.Huntington Park, CA 902551467466243
  6. Mohan Bhasker, M.D.Gardena, CA 902471356426241
  7. William Essilfie, MDGardena, CA 902471588744627
  8. Rajeev Attam, MDDowney, CA 902421184694309

Common questions

What is Mark Lott, M.D.'s NPI number?

Mark Lott, M.D.'s National Provider Identifier (NPI) is 1821192139, issued on Sep 8, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Lott, M.D. located?

The NPPES record lists a practice address at 501 E Hardy St, Inglewood, CA, 90301. Phone: (310) 671-7010. Providers update this record themselves, so call before visiting.

How can I verify Mark Lott, M.D.'s license?

NPPES lists California license number G85987, 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 Mark Lott, M.D. prescribe under Medicare Part D?

In 2024, Mark Lott, M.D. had 759 Medicare Part D claims for 362 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

What is Mark Lott, M.D.'s MIPS final score?

The 2023 MIPS final score is 22.1 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.