Dr Lazar John Greenfield Jr, MD, PHD - Medicare Neurology in Farmington, CT

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Dr Lazar John Greenfield Jr, MD, PHD is a medicare enrolled "Psychiatry & Neurology - Neurology" physician in Farmington, Connecticut. He went to University Of Virginia School Of Medicine and graduated in 1989 and has 35 years of diverse experience with area of expertise as Neurology. He is a member of the group practice University Of Connecticut Health Center, Bristol Hospital Multi-specialty Group, Inc. and his current practice location is Uconn Medical Group, 263 Farmington Ave, Farmington, Connecticut. You can reach out to his office (for appointments etc.) via phone at (860) 679-4888.

Dr Lazar John Greenfield Jr is licensed to practice in Connecticut (license number 055487) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1841286994.

Contact Information

Dr Lazar John Greenfield Jr, MD, PHD
Uconn Medical Group, 263 Farmington Ave,
Farmington, CT 06030-0001
(860) 679-4888
(860) 679-0131

Map and Direction




Physician's Profile

Full NameDr Lazar John Greenfield Jr
GenderMale
SpecialityNeurology
Experience35 Years
LocationUconn Medical Group, Farmington, Connecticut
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Lazar John Greenfield Jr attended and graduated from University Of Virginia School Of Medicine in 1989
  NPI Data:
  • NPI Number: 1841286994
  • Provider Enumeration Date: 09/23/2005
  • Last Update Date: 09/29/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 4385613181
  • Enrollment ID: I20160912000298

Medical Identifiers

Medical identifiers for Dr Lazar John Greenfield Jr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1841286994NPI-NPPES
2132034MedicaidOH

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084N0400XPsychiatry & Neurology - Neurology 35076214 (Ohio)Secondary
2084N0600XPsychiatry & Neurology - Clinical Neurophysiology E-6501 (Arkansas)Secondary
2084N0600XPsychiatry & Neurology - Clinical Neurophysiology 055487 (Connecticut)Secondary
2084N0400XPsychiatry & Neurology - Neurology 055487 (Connecticut)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
John Dempsey HospitalFarmington, CTHospital
Bristol HospitalBristol, CTHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
University Of Connecticut Health Center3678472016540
Bristol Hospital Multi-specialty Group, Inc.9032014758116

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Lazar John Greenfield Jr allows following entities to bill medicare on his behalf.
Entity NameHartford Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1407806391
PECOS PAC ID: 2567366016
Enrollment ID: O20031125000700
Entity NameHartford Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770696643
PECOS PAC ID: 2567366016
Enrollment ID: O20031125000752
Entity NameBristol Hospital Multi-specialty Group, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1649265679
PECOS PAC ID: 9032014758
Enrollment ID: O20031204000960
Entity NameMiddlesex Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1972563138
PECOS PAC ID: 5092611731
Enrollment ID: O20031216000592
Entity NameUniversity Of Connecticut Health Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1720083769
PECOS PAC ID: 3678472016
Enrollment ID: O20040106000105

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Lazar John Greenfield Jr is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Lazar John Greenfield Jr, MD, PHD
Uconn Medical Group, 263 Farmington Ave,
Farmington, CT 06030-0001

Ph: (860) 679-4888		Dr Lazar John Greenfield Jr, MD, PHD
Uconn Medical Group, 263 Farmington Ave,
Farmington, CT 06030-0001

Ph: (860) 679-4888

Reviews and Comments


Psychiatry & Neurology Doctors in Farmington, CT

William P Shea Iii, MD
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Practice Location: 263 Farmington Ave, Farmington, CT 06030
Phone: 860-679-6700    Fax: 860-679-6736
Kristina Frances Victoria Zdanys,
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Marie Carl Eugene, D.O.
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Practice Location: 263 Farmington Ave, Neurology Mc-3835, Farmington, CT 06030
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Feier Liu, D.O
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Gema Guanco, MD
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Practice Location: 270 Farmington Ave, Suite 309, Farmington, CT 06032
Phone: 860-677-5570    Fax: 860-677-9570
Dr. Asante Kofi Mendes, M.D.
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Practice Location: 263 Farmington Ave, Farmington, CT 06030
Phone: 860-679-2000    
Dr. David Matuskey,
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Practice Location: 10 Talcott Notch Rd Ste 3e, Farmington, CT 06032
Phone: 860-679-6722    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.