Perry Len Hassell, PH.D.
Psychologist · Oklahoma City, OK
Perry Len Hassell, PH.D. is a psychologist with a practice address in Oklahoma City, Oklahoma, and NPI 1750493227, issued on Aug 31, 2006. Check the license (Oklahoma 480, as entered in NPPES) with the Oklahoma board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Perry Len Hassell
- Credential
- PH.D.
- Primary taxonomy
- Psychologist 103T00000X
- License number
- 480 OK
Self-reported in NPPES; status is on the state search - Practice location
- 5100 N Brookline Ave, Oklahoma City, OK 73112
- Phone
- (405) 604-3170
- Enumerated
- Aug 31, 2006
- Record last updated
- Jul 21, 2022
- Fax
- (405) 948-2745
- Medicaid ID
- 100839670 A OK
- Medicare enrollment
- Enrolled (PECOS I20110920000913); 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 5100 N Brookline Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- John Call, PH.D.Forensic Psychologist1760605919
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- David Croninger, D. MIN.Addiction (Substance Use Disorder) Counselor1982964920
Verify Perry Len Hassell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oklahoma board licenses this profession
Search for license 480Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 77.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Integris Ambulatory Care CorporationOklahoma City, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Perry Len Hassell among 256 psychologist records in Oklahoma
Perry Len Hassell, PH.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 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 57% newer
- In a Medicare fileYes · 8% of these records are
- In the CMS Doctors and Clinicians fileYes · 20% of these records are
- Graduated1982 · median 1996 among the 52 with a school on file
- Record last updated2022 · 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 Oklahoma City → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Catharine Abbott, PHDOklahoma City, OK 731121386605293
- Karan Allbright, PHDOklahoma City, OK 731121295796597
- Freddie DubonOklahoma City, OK 731121437419942
- Sean Ferrell, PH.DOklahoma City, OK 731121942246228
- Pamela Forducey, PH.D.Oklahoma City, OK 731121649365966
- Joyce Friedman, PH.D.Oklahoma City, OK 731121801834197
- Bruce Lochner, PH.D.Oklahoma City, OK 731121679797799
- Ryan Scott, PH.D.Oklahoma City, OK 731121316003809
Common questions
What is Perry Len Hassell, PH.D.'s NPI number?
Perry Len Hassell, PH.D.'s National Provider Identifier (NPI) is 1750493227, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Perry Len Hassell, PH.D. located?
The NPPES record lists a practice address at 5100 N Brookline Ave, Oklahoma City, OK, 73112. Phone: (405) 604-3170. Providers update this record themselves, so call before visiting.
How can I verify Perry Len Hassell, PH.D.'s license?
NPPES lists Oklahoma license number 480, as entered by the provider. Search the Oklahoma board that licenses this profession; the NPPES record confirms identity only.
What is Perry Len Hassell, PH.D.'s MIPS final score?
The 2023 MIPS final score is 77.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.