Rodney J. Erwin, MD
Child & Adolescent Psychiatry Physician · Walnut Creek, CA
Rodney J. Erwin, MD is a child & adolescent psychiatry physician with a practice address in Walnut Creek, California, and NPI 1407934557, issued on Nov 2, 2006. Check the license (California A67950, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Rodney J. Erwin
- Credential
- MD
- Primary taxonomy
- Child & Adolescent Psychiatry Physician 2084P0804X
- License number
- A67950 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1425 S Main St, Walnut Creek, CA 94596
- Phone
- (925) 295-4000
- Enumerated
- Nov 2, 2006
- Record last updated
- Dec 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00A679500 CA
- Medicare enrollment
- Enrolled (PECOS I20041018001284); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 1997
- Entity
- Type 1 · individual
8 nearest child & adolescent psychiatry physician records → All 1,009 in California → Look up another NPI →
Also registered at 1425 S Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Rodney J. Erwin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A67950Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% more Medicare Part D claims than the average child & adolescent psychiatry physician in 2024
541 Medicare Part D claims for 46 beneficiaries, against an average of 504 among the 3,545 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Lorazepam26 claims
- Duloxetine Hcl23 claims
- Gabapentin23 claims
- Hydroxyzine Hcl21 claims
- Fluoxetine Hcl20 claims
- Bupropion Xl19 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.
Bills Medicare through one group practice
- Permanente Medical Group IncPetaluma, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rodney J. Erwin among 1,009 child & adolescent psychiatry physician records in California
Rodney J. Erwin, MD is one of 1,009 child & adolescent psychiatry physician records with a practice address in California. 55% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 65% newer
- In a Medicare fileYes · 55% of these records are
- In the CMS Doctors and Clinicians fileYes · 21% of these records are
- Graduated1997 · median 2005 among the 215 with a school on file
- Record last updated2021 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0804X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Child & Adolescent Psychiatry Physician providers in California
There are 1,009 child & adolescent psychiatry physician records in California.
All 1,009 in California → Every provider in Walnut Creek → Child & Adolescent Psychiatry Physician nationwide →
The 8 child & adolescent psychiatry physician records with the nearest ZIP codes
- Ardis Martin, M.D.Walnut Creek, CA 945961831237098
- Deepak Rao, MDWalnut Creek, CA 945961215090808
- Gerard Schmit, MDWalnut Creek, CA 945961154484749
- Melinda Young, M.D.Walnut Creek, CA 945961700199643
- Mansoor Zuberi, MDWalnut Creek, CA 945961972666568
- Liana Lau, MDWalnut Creek, CA 945971245895416
- Estelita Marquez Floyd, MDWalnut Creek, CA 945951194854935
- Vasanta Giri, M.D.Oakland, CA 946021487701264
Common questions
What is Rodney J. Erwin, MD's NPI number?
Rodney J. Erwin, MD's National Provider Identifier (NPI) is 1407934557, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Rodney J. Erwin, MD located?
The NPPES record lists a practice address at 1425 S Main St, Walnut Creek, CA, 94596. Phone: (925) 295-4000. Providers update this record themselves, so call before visiting.
How can I verify Rodney J. Erwin, MD's license?
NPPES lists California license number A67950, 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 Rodney J. Erwin, MD prescribe under Medicare Part D?
In 2024, Rodney J. Erwin, MD had 541 Medicare Part D claims for 46 beneficiaries; the average among child & adolescent psychiatry physician prescribers was 504. 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.