NPPES file of Aug 9, 2026

Mark Nelson Monroe, M.D.

Family Medicine Physician · Santa Ana, CA

Mark Nelson Monroe, M.D. is a family medicine physician with a practice address in Santa Ana, California, and NPI 1740244532, issued on Apr 17, 2006. Check the license (California A39997, 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
1740244532
Name
Mark Nelson Monroe
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A39997 CA
Self-reported in NPPES; status is on the state search
Practice location
2414 S Fairview St, Santa Ana, CA 92704
Phone
(714) 641-0121
Enumerated
Apr 17, 2006
Record last updated
Nov 3, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(714) 641-2054
Medicare enrollment
Enrolled (PECOS I20120301000506); 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 2414 S Fairview St

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

  1. Lisa De La Pena, NPPrimary Care Nurse Practitioner1104745264
  2. Mai Uyen Do, FNP-CRegistered Nurse1447878087
  3. Teresa DoDentist1457768442
  4. Denton Garo, POLYSOMNOGRAPHY TECHOther Specialist/Technologist1306877337
  5. Vanessa GrichineOptometrist1205288370
  6. Gauri Kumar, DDSGeneral Practice Dentistry1841387651

Verify Mark Nelson Monroe in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A39997
    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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65% more Medicare Part D claims than the average family medicine physician in 2024

5,840 Medicare Part D claims for 227 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 105 claims were for opioids.

  1. Mark Monroe5,840
  2. Specialty average3,544

Most prescribed

  1. Rosuvastatin Calcium233 claims
  2. Metoprolol Succinate219 claims
  3. Pantoprazole Sodium141 claims
  4. Levothyroxine Sodium136 claims
  5. Allopurinol134 claims
  6. Atorvastatin Calcium127 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): 16.4 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%54.8
  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: $1,816.64

55 payments; by number, the most common kind was food and beverage; the largest payer was Aimmune Therapeutics, Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Monroe$1,816.64
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Mark Nelson Monroe among 17,133 family medicine physician records in California

Mark Nelson Monroe, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% 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 6% of them.

  • NPI issued2006 · 6% of these records are older, 59% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1980 · median 2005 among the 10,652 with a school on file
  • Record last updated2011 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

177 family medicine physician records list a practice address in Santa Ana

They are 177 of the 8,904 NPPES records with a practice address in Santa Ana, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Sura Ark, M.D.Santa Ana, CA 927041285696021
  2. Rama Bathala-Patel, MDSanta Ana, CA 927041992853774
  3. Gerardo Canchola, M.D.Santa Ana, CA 927041639185879
  4. George Fields, DOSanta Ana, CA 927041457387482
  5. Jorge Galdamez, M.D.Santa Ana, CA 927041710900998
  6. Sasithorn Jitpakdee, M.D.Santa Ana, CA 927041699871467
  7. Susan Keisner, MDSanta Ana, CA 927041417954793
  8. Jorge Lopez, M.D.Santa Ana, CA 927041881705556

Common questions

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

Mark Nelson Monroe, M.D.'s National Provider Identifier (NPI) is 1740244532, issued on Apr 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Nelson Monroe, M.D. located?

The NPPES record lists a practice address at 2414 S Fairview St, Santa Ana, CA, 92704. Phone: (714) 641-0121. Providers update this record themselves, so call before visiting.

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

NPPES lists California license number A39997, 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 Nelson Monroe, M.D. prescribe under Medicare Part D?

In 2024, Mark Nelson Monroe, M.D. had 5,840 Medicare Part D claims for 227 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

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

The 2023 MIPS final score is 16.4 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.