Kate Erin Monahan, DO
Internal Medicine Physician · Orange, CA
Kate Erin Monahan, DO is an internal medicine physician with a practice address in Orange, California, and NPI 1043848732, issued on Mar 30, 2020. Check the license (California 20A20009, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kate Erin Monahan
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A20009 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2501 E Chapman Ave Ste 204, Orange, CA 92869
- Phone
- (714) 628-3230
- Enumerated
- Mar 30, 2020
- Record last updated
- Nov 21, 2023
- Medicare enrollment
- Enrolled (PECOS I20231206002956); accepts Medicare assignment
- Medical or professional school
- Touro Un Col Of Osteopathic Medicine, Henderson, 2020
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 2501 E Chapman Ave Ste 204
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tat Lam, MDFamily Medicine Physician1134288749
- June Makiyama, PA-CPhysician Assistant1508063827
Verify Kate Erin Monahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A20009Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,374 Medicare Part D claims for 353 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 80 claims were for opioids.
Most prescribed
- Atorvastatin Calcium146 claims
- Losartan Potassium98 claims
- Gabapentin80 claims
- Amlodipine Besylate79 claims
- Lisinopril65 claims
- Levothyroxine Sodium63 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.
Industry payments in 2024: $28.30
1 payment: food and beverage; the largest payer was Aurinia Pharma U.S., Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Providence Medical FoundationFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
187 internal medicine physician records list a practice address in Orange
They are 187 of the 13,245 NPPES records with a practice address in Orange, and 17,696 internal medicine physician records in California.
All 187 in Orange → All 17,696 in California → Every provider in Orange →
Other internal medicine physician records in California
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- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Kate Erin Monahan, DO's NPI number?
Kate Erin Monahan, DO's National Provider Identifier (NPI) is 1043848732, issued on Mar 30, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Kate Erin Monahan, DO located?
The NPPES record lists a practice address at 2501 E Chapman Ave Ste 204, Orange, CA, 92869. Phone: (714) 628-3230. Providers update this record themselves, so call before visiting.
How can I verify Kate Erin Monahan, DO's license?
NPPES lists California license number 20A20009, 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 Kate Erin Monahan, DO prescribe under Medicare Part D?
In 2024, Kate Erin Monahan, DO had 2,374 Medicare Part D claims for 353 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.