Individual provider

Cheryl Phelps, MA LSWA LPC LMFT

Social Worker Counselor Marriage & Family Therapist

Cheryl Phelps, MA LSWA LPC LMFT is a provider specialising in Social Worker in Tulsa, OK, registered under NPI 1659457588. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.

Getting there

The practice address on file is 4870 S LEWIS 190, Tulsa, OK 74105. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.

4870 S LEWIS 190, Tulsa, OK 74105 Open in Google Maps →

Credentials and Medicare

State licence
LicenceStateSpecialty
0860 OK Social Worker primary
966 OK Counselor
454 OK Marriage & Family Therapist

This provider holds licence 0860 issued in OK. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.

Medicare (PECOS)

This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.

What Social Worker covers

A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public. NUCC Health Care Provider Taxonomy, code 104100000X
Behavioral Health & Social Service Providers Social Worker

All registered taxonomy codes

This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.

CodeSpecialtyLicenceState
104100000X Social Worker 0860 OK primary
101Y00000X Counselor 966 OK
106H00000X Marriage & Family Therapist 454 OK

The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.

Full NPPES record

An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.

NPI1659457588 valid check digit
Entity typeIndividual (NPI-1)
Enumeration dateOct 31, 2006
Last updatedSep 11, 2025
StatusActive
Sole proprietorNo
CredentialMA LSWA LPC LMFT
Practice address 4870 S LEWIS 190
Tulsa, OK 74105
(918) 742-3133
Fax (918) 742-7677
This record was updated on Sep 11, 2025, which is recent enough that the contact details are likely still accurate.

Number check

1659457588 passes the NPI check digit test The final digit 8 matches the value computed from the first nine digits, so this is a well-formed NPI.
How the check works, step by step

Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.

Digit 8 0 8 4 0 1 6 5 9 4 5 7 5 8
Doubled? ×2 ×2 ×2 ×2 ×2 ×2 ×2
Value 8 0 8 8 0 2 6 1 9 8 5 5 5 7

Sum = 72 · next multiple of 10 = 80 · check digit = 8 · actual last digit = 8

A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.

Common questions

What is NPI number 1659457588?
NPI 1659457588 is the National Provider Identifier assigned to Cheryl Phelps, MA LSWA LPC LMFT in Tulsa, OK. It is a 10-digit number issued by the Centers for Medicare & Medicaid Services and used on claims, referrals, and prescriptions to identify the provider.
What does Social Worker cover?
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and…
How do I contact Cheryl Phelps, MA LSWA LPC LMFT?
The phone number on file with NPPES is (918) 742-3133, last updated Sep 11, 2025. Because NPPES is only updated when a provider files a change, call ahead to confirm the number and the current practice address before visiting.
Is NPI 1659457588 a valid number?
Yes. 1659457588 passes the Luhn check digit validation that CMS uses for NPI numbers, and it resolves to an active record in the registry.
How to use this page. Everything here comes from public federal records. Tips Health does not verify quality of care, confirm that a licence is currently active, or check malpractice history, and accepts no fees for placement. A listing is not a recommendation. Verify independently before seeking care.