Karen Antwiler, M.D.
Addiction Medicine (Family Medicine) Physician · Cathedral City, CA
Karen Antwiler, M.D. is an addiction medicine (family medicine) physician with a practice address in Cathedral City, California, and NPI 1598255465, issued on May 15, 2018. Check the license (California A178391, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karen Antwiler
- Credential
- M.D.
- Primary taxonomy
- Addiction Medicine (Family Medicine) Physician 207QA0401X
- License number
- A178391 CA
Self-reported in NPPES; status is on the state search - Practice location
- 67780 E Palm Canyon Dr, Cathedral City, CA 92234
- Phone
- (760) 773-4300
- Enumerated
- May 15, 2018
- Record last updated
- Feb 4, 2025
- Fax
- (760) 837-8994
- Medicare enrollment
- Enrolled (PECOS I20230815003062); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 67780 E Palm Canyon Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ruba Alchaikh HassanInternal Medicine Physician1952046450
- Janpreet Bhandohal, M.D.Internal Medicine Physician1497107825
- William Christensen, MDInternal Medicine Physician1205920691
- Carlos Gutierrez Garibay, MDInternal Medicine Physician1679260681
- Laurie Hannan-Reagan, FNP-CFamily Nurse Practitioner1043752710
- Kristopher Keene, PA-CPhysician Assistant1336190172
Verify Karen Antwiler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A178391Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% fewer Medicare Part D claims than the average addiction medicine (family medicine) physician in 2024
373 Medicare Part D claims for 83 beneficiaries, against an average of 664 among the 581 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.
Most prescribed
- Buprenorphine-Naloxone84 claims
- Trazodone Hcl42 claims
- Naltrexone Hcl41 claims
- Baclofen29 claims
- Buprenorphine Hcl29 claims
- Gabapentin26 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: $253.70
7 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 305 providers of this specialty with any payment received $1,151.00 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.
One hospital affiliation
- Eisenhower Medical CenterRancho Mirage, CA · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Addiction Medicine (Family Medicine) Physician providers in California
There are 124 addiction medicine (family medicine) physician records in California.
Other addiction medicine (family medicine) physician records in California
- Ariana Abid, MDStanford, CA1285154807
- Belis Aladag, MD, MPH, FASAMWalnut Creek, CA1295994275
- Marianne Aldridge, M.D.Loma Linda, CA1336311000
- Dale Apodaca, M.D.San Diego, CA1598036436
- Alexandra Arenson, DOWalnut Creek, CA1689170573
- Jonathan Avalos, M.D.Rialto, CA1386050805
- Jerry Ayers, MDSan Diego, CA1104977602
- Samantha AyoubLoma Linda, CA1346701174
- K. BallParadise, CA1659578672
- Lakai Banks-Dean, MDEl Cajon, CA1346746930
Common questions
What is Karen Antwiler, M.D.'s NPI number?
Karen Antwiler, M.D.'s National Provider Identifier (NPI) is 1598255465, issued on May 15, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Karen Antwiler, M.D. located?
The NPPES record lists a practice address at 67780 E Palm Canyon Dr, Cathedral City, CA, 92234. Phone: (760) 773-4300. Providers update this record themselves, so call before visiting.
How can I verify Karen Antwiler, M.D.'s license?
NPPES lists California license number A178391, 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 Karen Antwiler, M.D. prescribe under Medicare Part D?
In 2024, Karen Antwiler, M.D. had 373 Medicare Part D claims for 83 beneficiaries; the average among addiction medicine (family medicine) physician prescribers was 664. 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.