Barbara Moon Showalter, MD
Family Medicine Physician · Merced, CA
Barbara Moon Showalter, MD is a family medicine physician with a practice address in Merced, California, and NPI 1669435947, issued on Apr 8, 2006. Check the license (California G063855, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Barbara Moon Showalter
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G063855 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2039 Canal St, Merced, CA 95340
- Phone
- (209) 723-7761
- Enumerated
- Apr 8, 2006
- Record last updated
- Mar 25, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (209) 381-0322
- Medicaid ID
- 00G638550 CA
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Barbara Moon Showalter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G063855Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average family medicine physician in 2024
355 Medicare Part D claims for 11 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 140 claims were for opioids.
Most prescribed
- Morphine Sulfate Er47 claims
- Oxycodone Hcl44 claims
- Alprazolam24 claims
- Hydrocodone-Acetaminophen19 claims
- Oxycontin15 claims
- Carisoprodol14 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.
Barbara Moon Showalter among 17,133 family medicine physician records in California
Barbara Moon Showalter, MD 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 fileNo · 62% of these records are
- Record last updated2009 · 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).
94 family medicine physician records list a practice address in Merced
They are 94 of the 2,836 NPPES records with a practice address in Merced, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Merced → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Vincent Ansley, MDMerced, CA 953401871584185
- David Barabe, M.D.Merced, CA 953401255361770
- Albert Col, M.D.Merced, CA 953401952411266
- Timothy Johnston, M.D.Merced, CA 953401528097847
- Jeanette Kuizon, MDMerced, CA 953401962485243
- Aimee NagtalonMerced, CA 953401487698221
- George Nevatt, MDMerced, CA 953401538194196
- Maciej Ossowski, M. D.Merced, CA 953401346207883
Common questions
What is Barbara Moon Showalter, MD's NPI number?
Barbara Moon Showalter, MD's National Provider Identifier (NPI) is 1669435947, issued on Apr 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Barbara Moon Showalter, MD located?
The NPPES record lists a practice address at 2039 Canal St, Merced, CA, 95340. Phone: (209) 723-7761. Providers update this record themselves, so call before visiting.
How can I verify Barbara Moon Showalter, MD's license?
NPPES lists California license number G063855, 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 Barbara Moon Showalter, MD prescribe under Medicare Part D?
In 2024, Barbara Moon Showalter, MD had 355 Medicare Part D claims for 11 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.