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MR. JOHN GREGOR HOLZHEIMER LISW
NPI 1124572987
Counselor in Lakewood, OH

Active since August 10, 2016PECOS Enrolled
14701 DETROIT AVE RM 350-34, LAKEWOOD, OH 44107(212) 470-3223 Get Directions Write a Review

NPPES record last updated: March 21, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 21, 2025, Apr 25, 2019, Aug 10, 2016 (3 updates tracked since 2016).

About Mr. John Gregor Holzheimer Lisw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. JOHN GREGOR HOLZHEIMER LISW (NPI 1124572987) is an individual counselor in Lakewood, Ohio, licensed in Ohio (I.2506361) and active in the NPI registry since August 2016. He is enrolled in Medicare PECOS and maintains a secondary practice location in Cleveland.

NPPES Registry Identity

NPI1124572987
Entity TypeIndividualMale
Primary Taxonomy101Y00000X
Provider Legal NameMR. JOHN GREGOR HOLZHEIMERCredential: LISW
Location Address14701 DETROIT AVE RM 350-34Lakewood, OH 44107-4115
Mailing Address14701 Detroit Ave Rm 350-34Lakewood, OH 44107-4115 · (212) 470-3223
Phone(212) 470-3223
Sole ProprietorNo
Enumeration DateAugust 10, 2016
Last NPPES UpdateMarch 21, 20253 updates tracked since enumeration
NPPES CertifiedMarch 21, 2025
✔ NPI 1124572987 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselorBehavioral Health & Social Service Providers
Taxonomy Code101Y00000X
License✔ Licensed in OH · I.2506361
Definition
A provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and education at the specialty level usually requires a master's degree and clinical experience and supervision for licensure or certification.
14701 DETROIT AVE RM 350-34, Lakewood, OH 44107
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Other Names 1

Other Name (5)Mr. Greg Holzheimer Lisw

Secondary Practice Location 1

Location 1248 E 151st StCleveland, OH 44110-1215 · Phone (212) 470-3223

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mr. John Gregor Holzheimer Lisw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show John Holzheimer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Signature Health, Inc.
11 mi
Mental Health
5410 TRANSPORTATION BLVD, UNIT 4
Garfield Heights, OH 44125
  • Reassigned Medicare billing, Ohio enrollment
  • 342 clinicians in this Medicare group
NPI 1679767289 (216) 663-6100

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Holzheimer's NPI number?

The NPI number for John Holzheimer is 1124572987. It was assigned to this individual provider in the NPPES registry on August 10, 2016. The provider is also known as Mr. Greg Holzheimer Lisw.

Where is John Holzheimer located?

John Holzheimer practices at 14701 Detroit Ave Rm 350-34, Lakewood, OH 44107. The listed phone number is (212) 470-3223.

What is John Holzheimer's specialty?

The primary specialty registered for this NPI is Counselor with taxonomy code 101Y00000X.

Is John Holzheimer enrolled in Medicare?

Yes. John Holzheimer is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for John Holzheimer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Holzheimer reassigns Medicare benefits to Signature Health, Inc. (Garfield Heights, OH). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Holzheimer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does John Holzheimer accept?

Health plans from CareSource list John Holzheimer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for John Holzheimer was last updated on March 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.