Mary C. Underhill, PSY.D.
Psychologist · Norman, OK
Mary C. Underhill, PSY.D. is a psychologist with a practice address in Norman, Oklahoma, and NPI 1487900858, issued on Aug 3, 2012. Check the license (Oklahoma 1159, as entered in NPPES) with the Oklahoma board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary C. Underhill
- Credential
- PSY.D.
- Primary taxonomy
- Psychologist 103T00000X
- License number
- 1159 OK
Self-reported in NPPES; status is on the state search - Practice location
- 712 Wall St, Norman, OK 73069
- Phone
- (405) 579-7560
- Enumerated
- Aug 3, 2012
- Record last updated
- Jul 8, 2026
- Fax
- (405) 579-7563
- Medicare enrollment
- Enrolled (PECOS I20120921000248); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychologist records → All 256 in Oklahoma → Look up another NPI →
Also registered at 712 Wall St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Amy Ivy, NPPsychiatric/Mental Health Nurse Practitioner1215799473
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Verify Mary C. Underhill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oklahoma board licenses this profession
Search for license 1159Check 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
- Norman Behavioral Health Group, LLCNorman, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary C. Underhill among 256 psychologist records in Oklahoma
Mary C. Underhill, PSY.D. is one of 256 psychologist records with a practice address in Oklahoma. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 69% of them.
- NPI issued2012 · 69% of these records are older, 26% newer
- In a Medicare fileYes · 8% of these records are
- In the CMS Doctors and Clinicians fileYes · 20% of these records are
- Graduated2011 · median 1996 among the 52 with a school on file
- Record last updated2026 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychologist providers in Oklahoma
There are 256 psychologist records in Oklahoma.
All 256 in Oklahoma → Every provider in Norman → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Candace ByrdNorman, OK 730691750680468
- Mark Englander, PH.D.Norman, OK 730691730494394
- Melissa Frey, PH.D.Norman, OK 730691871704288
- Raymond Fuchs, PH.D.Norman, OK 730691386656106
- Gale Hobson, PHDNorman, OK 730691871639583
- Shelli Jackson, PH.D.Norman, OK 730691033129010
- Heidi Kamm, PH.D.Norman, OK 730691598087256
- Russell Koch, PHDNorman, OK 730691275630410
Common questions
What is Mary C. Underhill, PSY.D.'s NPI number?
Mary C. Underhill, PSY.D.'s National Provider Identifier (NPI) is 1487900858, issued on Aug 3, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mary C. Underhill, PSY.D. located?
The NPPES record lists a practice address at 712 Wall St, Norman, OK, 73069. Phone: (405) 579-7560. Providers update this record themselves, so call before visiting.
How can I verify Mary C. Underhill, PSY.D.'s license?
NPPES lists Oklahoma license number 1159, as entered by the provider. Search the Oklahoma 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.