Colter Lynn Diehl, MFTI
Marriage & Family Therapist · Napa, CA
Colter Lynn Diehl, MFTI is a marriage & family therapist with a practice address in Napa, California, and NPI 1447620117, issued on Oct 6, 2015. Check the license (California 85257, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Colter Lynn Diehl
- Credential
- MFTI
- Primary taxonomy
- Marriage & Family Therapist 106H00000X
- License number
- 85257 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1100 Lincoln Ave, Napa, CA 94558
- Phone
- (707) 255-3718
- Enumerated
- Oct 6, 2015
- Record last updated
- Oct 6, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (707) 255-3715
- Medicare enrollment
- Enrolled (PECOS I20240423002755); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1100 Lincoln Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John BurtonCase Manager/Care Coordinator1568884377
- Ronald ColemanMental Health Counselor1144355579
- Mary Davis, D.C.Chiropractor1275644213
- Marie DennettCase Manager/Care Coordinator1093263931
- Danielle DorseyCounselor1770030892
- Tami Eade, DCChiropractor1639560493
Verify Colter Lynn Diehl in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 85257Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Talkspace Provider Network CA PCTwentynine Palms, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
187 marriage & family therapist records list a practice address in Napa
They are 187 of the 3,583 NPPES records with a practice address in Napa, and 59,889 marriage & family therapist records in California.
All 187 in Napa → All 59,889 in California → Every provider in Napa →
Other marriage & family therapist records in California
- Lili Aames, LMFTSanta Fe Springs, CA1689836165
- Lynn Aamot, LMFTEl Dorado Hills, CA1508255027
- Nathan Aanderud, LMFTTorrance, CA1689036907
- Alex AaronSherman Oaks, CA1578442620
- Bianca Aaron, LMFT, APCCSan Francisco, CA1316459605
- Kelley Aaron, MFTLos Angeles, CA1699068866
- Ruth Aaron, MS, JD, MFTClaremont, CA1316029697
- Terry Aaron, MFTBurbank, CA1386801173
- Azadeh Aarons, LMFTThousand Oaks, CA1679343974
- Bianca Aarons, MA,LMFTSan Francisco, CA1699286732
Common questions
What is Colter Lynn Diehl, MFTI's NPI number?
Colter Lynn Diehl, MFTI's National Provider Identifier (NPI) is 1447620117, issued on Oct 6, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Colter Lynn Diehl, MFTI located?
The NPPES record lists a practice address at 1100 Lincoln Ave, Napa, CA, 94558. Phone: (707) 255-3718. Providers update this record themselves, so call before visiting.
How can I verify Colter Lynn Diehl, MFTI's license?
NPPES lists California license number 85257, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.