GREGORY T MACLENNAN MD
NPI 1992731681
Pathology - Anatomic Pathology in Cleveland, OH

Active since June 24, 2006PECOS EnrolledAccepts Medicare Assignment
79.48/100
CMS Quality Rating
11100 EUCLID AVE, CLEVELAND, OH 44106(216) 844-7494(216) 286-6341 Get Directions Write a Review

NPPES record last updated: August 25, 2010. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Gregory T Maclennan Md NPPES

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

GREGORY T MACLENNAN MD (NPI 1992731681) is an individual anatomic pathology provider in Cleveland, Ohio, licensed in Ohio (35068763) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Uh Regional Hospitals, and is a graduate of Other (1971).

NPPES Registry Identity

NPI1992731681
Entity TypeIndividualMale
Primary Taxonomy207ZP0101X
Provider Legal NameGREGORY T MACLENNANCredential: MD
Location Address11100 EUCLID AVECleveland, OH 44106-1716
Mailing Address24701 Euclid Ave, 3rd FloorEuclid, OH 44117-1714
Fax(216) 286-6341
Sole ProprietorNo
Medical School CMSOtherGraduated 1971
Enumeration DateJune 24, 2006
Last NPPES UpdateAugust 25, 2010
NPI 1992731681 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 15

Primary SpecialtyPathology · Anatomic PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0101X
License Licensed in OH · 35068763
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
Also ListedPathology · Blood Banking & Transfusion MedicineTaxonomy 207ZB0001X · License 35068763 (OH)
Also ListedPathology · Clinical PathologyTaxonomy 207ZC0006X · License 35068763 (OH)
Also ListedPathology · CytopathologyTaxonomy 207ZC0500X · License 35068763 (OH)
Also ListedPathology · DermatopathologyTaxonomy 207ZD0900X · License 35068763 (OH)
Also ListedPathology · Forensic PathologyTaxonomy 207ZF0201X · License 35068763 (OH)
Also ListedPathology · HematologyTaxonomy 207ZH0000X · License 35068763 (OH)
Also ListedPathology · ImmunopathologyTaxonomy 207ZI0100X · License 35068763 (OH)
Also ListedPathology · Medical MicrobiologyTaxonomy 207ZM0300X · License 35068763 (OH)
Also ListedPathology · NeuropathologyTaxonomy 207ZN0500X · License 35068763 (OH)
Also ListedPathology · Molecular Genetic PathologyTaxonomy 207ZP0007X · License 35068763 (OH)
Also ListedPathology · Anatomic Pathology & Clinical PathologyTaxonomy 207ZP0102X · License 35068763 (OH)
Also ListedPathology · Chemical PathologyTaxonomy 207ZP0104X · License 35068763 (OH)
Also ListedPathology · Clinical Pathology/Laboratory MedicineTaxonomy 207ZP0105X · License 35068763 (OH)
Also ListedPathology · Pediatric PathologyTaxonomy 207ZP0213X · License 35068763 (OH)
11100 EUCLID AVE, Cleveland, OH 44106

Other Identifiers 15

Other000000582772OH · Anthem
Other0127464OH · Bcmh
Other000000224302OH · Unison
Other744995OH · Buckeye
Medicaid0154381OH
Other000000528772OH · Anthem
Medicare UPIND28642OH
OtherP00412500OH · Railroad Medicare
Other220017463OH · Railroad Medicare
Medicare PINMA0784783OH
Medicare PINMA0784781OH
Other000000031604OH · Anthem
Other658175OH · Aetna
Other363794OH · Wellcare
Other1100396OH · Uhc

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Gregory T Maclennan Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4385620236
PECOS Enrollment IDI20070910000518
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.

Areas of Expertise CMS Part B claims 11

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Pathology examination of tissue using a microscope, intermediate complexity 88305
A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.
197 services93 patients
Cell examination of specimen, selective cellular enhancement technique 88112
Cell examination of a specimen using selective cellular enhancement technique is a lab process that improves the visibility of certain cells in a sample. It helps in identifying abnormalities or diseases. The process is non-invasive, safe, and aids in accurate diagnosis.
155 services143 patients
Special stained specimen slides to examine tissue, each additional procedure 88341
Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.
155 services28 patients
Special stained specimen slides to examine tissue, each multiplex procedure 88344
Special stained specimen slides are used to study tissue in detail. This multiplex procedure involves applying different dyes to the tissue sample on a slide to highlight specific elements. These colors help identify any abnormalities in the tissue, aiding in accurate diagnosis and treatment planning.
128 services39 patients
Evaluation of fine needle aspirate with interpretation and report 88173
This procedure involves using a thin needle to collect a small sample from an abnormal area or lump. The sample is then examined under a microscope to identify any potential issues. A report of the findings is provided for further analysis.
97 services37 patients
Evaluation of fine needle aspirate 88172
Evaluation of fine needle aspirate is a diagnostic procedure where a thin needle is used to collect cells from a lump or mass. This sample is then examined under a microscope to determine the nature of the lump, whether it's benign (non-cancerous) or malignant (cancerous).
95 services36 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Uh Regional Hospitals

Acute Care Hospitals · Chardon, OH
3/5 CMS rating
OwnershipProprietary
CMS Certification Number360075
Location13207 Ravenna RoadChardon, OH 44024 · Geauga County
Emergency services Birthing friendly

Uh St John Medical Center

Acute Care Hospitals · Westlake, OH
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number360123
Location29000 Center Ridge RoadWestlake, OH 44145 · Cuyahoga County
Emergency services

Uh Cleveland Medical Center

Acute Care Hospitals · Cleveland, OH
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number360137
Location11100 Euclid AvenueCleveland, OH 44106 · Cuyahoga County
Emergency services Birthing friendly

University Hospitals - Elyria Medical Center

Acute Care Hospitals · Elyria, OH
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number360145
Location630 East River StreetElyria, OH 44035 · Lorain County

University Hospitals Ahuja Medical Center

Acute Care Hospitals · Beachwood, OH
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number360359
Location3999 Richmond RoadBeachwood, OH 44122 · Cuyahoga County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 44106 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.12 typical visit price
range $54.34 – $166.65
Typical copayment $31.53 (range $13.58 – $41.66)
Most-billed visit code 99204
Established Patient
$96.44 typical visit price
range $17.10 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

79.48/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality68.51
Promoting Interoperability100
Improvement Activities40
Cost63.09

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Ophthalmology
11100 EUCLID AVE
CLEVELAND, OH 44106
Nurse Practitioner (Pediatrics)
11100 EUCLID AVE
CLEVELAND, OH 44106
General Acute Care Hospital (Children)
11100 EUCLID AVE, RBC 637
CLEVELAND, OH 44106
Student in an Organized Health Care Education/Training Program
11100 EUCLID AVE, UNIVERSITY HOSPITALS CASE MEDICAL CENTER
CLEVELAND, OH 44106
Student in an Organized Health Care Education/Training Program
11100 EUCLID AVE, UNIVERSITY HOSPITALS CASE MEDICAL CENTER
CLEVELAND, OH 44106
Student in an Organized Health Care Education/Training Program
11100 EUCLID AVE
CLEVELAND, OH 44106
Anesthesiology
11100 EUCLID AVE
CLEVELAND, OH 44106
Student in an Organized Health Care Education/Training Program
11100 EUCLID AVE
CLEVELAND, OH 44106

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 Gregory Maclennan's NPI number?

The NPI number for Gregory Maclennan is 1992731681. It was assigned to this individual provider in the NPPES registry on June 24, 2006.

Where is Gregory Maclennan located?

Gregory Maclennan practices at 11100 Euclid Ave, Cleveland, OH 44106. The listed phone number is (216) 844-7494.

What is Gregory Maclennan's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology, with taxonomy code 207ZP0101X.

Is Gregory Maclennan enrolled in Medicare?

Yes. Gregory Maclennan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Gregory Maclennan accept?

Health plans from Antidote Health Plan of Ohio, Inc. and CareSource list Gregory Maclennan 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.

Is Gregory Maclennan affiliated with any hospitals?

According to CMS data, Gregory Maclennan is affiliated with Uh Regional Hospitals, Uh St John Medical Center, Uh Cleveland Medical Center, University Hospitals - Elyria Medical Center and University Hospitals Ahuja Medical Center.

When was this NPI record last updated?

The NPPES record for Gregory Maclennan was last updated on August 25, 2010. NPI Profile syncs with the weekly NPPES data releases published by CMS.