GREGORY T MACLENNAN (MD) – Anatomic Pathology Physician, NPI 1992731681
Anatomic Pathology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
568 UROLOGY in OH
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Provider Addresses for GREGORY T MACLENNAN (MD)
Euclid Avenue, Brooklyn, Kings County, New York, 11208, United States
3RD FLOOR
EUCLID, OH 441171714
Phone:
Type: Mailing
University Hospitals Cleveland Medical Center, 11100, Euclid Avenue, University Circle, Cleveland, Cuyahoga County, Ohio, 44106, United States
CLEVELAND, OH 441061716
Phone: (216) 844-7494
Fax: (216) 286-6341
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2007-09-10
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20070910000518 | I | Pathology | OH | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 88112 | Cell examination of specimen, selective cellular enhancement technique | 256 | 233 | $0 |
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 248 | 136 | $0 |
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | 165 | 32 | $0 |
| 88173 | Evaluation of fine needle aspirate with interpretation and report | 97 | 44 | $0 |
| 88172 | Evaluation of fine needle aspirate | 92 | 36 | $0 |
Insurance plans in this area (ZIP 44117)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | OH | |
| - | MI | |
| Hospitalist, Internal Medicine | OH | |
| - | TX | |
| - | OH | |
| Certified Registered Nurse Anesthetist (Crna) | OH | |
| - | OH | |
| O B S T E T R I C S/ G Y N E C O L O G Y | OH | |
| - | OH | |
| - | OH |
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