Jacob C Holzer, MD - Medicare Psychiatry in Westborough, MA

Jacob C Holzer, MD is a medicare enrolled "Psychiatry & Neurology - Psychiatry" physician in Westborough, Massachusetts. He went to Tufts University School Of Medicine and graduated in 1986 and has 38 years of diverse experience with area of expertise as Psychiatry. He is a member of the group practice Massachusetts General Physicians Organization Inc, The Mclean Hospital Corporation and his current practice location is Westborough State Hospital, 288 Lyman St, Westborough, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (508) 616-2525.

Jacob C Holzer is licensed to practice in Massachusetts (license number 74258) 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 1144235433.

Contact Information

Jacob C Holzer, MD
Westborough State Hospital, 288 Lyman St,
Westborough, MA 01581
(508) 616-2525
Not Available

Map and Direction




Physician's Profile

Full NameJacob C Holzer
GenderMale
SpecialityPsychiatry
Experience38 Years
LocationWestborough State Hospital, Westborough, Massachusetts
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:
  • Jacob C Holzer attended and graduated from Tufts University School Of Medicine in 1986
  NPI Data:
  • NPI Number: 1144235433
  • Provider Enumeration Date: 07/29/2006
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 8224020599
  • Enrollment ID: I20040330000985

Medical Identifiers

Medical identifiers for Jacob C Holzer such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1144235433NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084P0800XPsychiatry & Neurology - Psychiatry 74258 (Massachusetts)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Massachusetts General Physicians Organization Inc24663658203084
The Mclean Hospital Corporation9436040961136

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. Jacob C Holzer allows following entities to bill medicare on his behalf.
Entity NameMassachusetts General Physicians Organization Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801874573
PECOS PAC ID: 2466365820
Enrollment ID: O20031111000434
Entity NameThe Mclean Hospital Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1114979580
PECOS PAC ID: 9436040961
Enrollment ID: O20040323001228
Entity NameThe General Hospital Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023049236
PECOS PAC ID: 6507803806
Enrollment ID: O20080313000351

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. Jacob C Holzer 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
Jacob C Holzer, MD
Westborough State Hospital, 288 Lyman St,
Westborough, MA 01581

Ph: (508) 616-2525
Jacob C Holzer, MD
Westborough State Hospital, 288 Lyman St,
Westborough, MA 01581

Ph: (508) 616-2525

Reviews and Comments


Psychiatry & Neurology Doctors in Westborough, MA

Syeda S Nuzhat, M.D.
Psychiatry & Neurology
Medicare: May Accept Medicare Assignments
Practice Location: Lyman Street-hennessey Bldg, Westborough State Hospital, Westborough, MA 01581
Phone: 508-616-2194    
Dr. Sarah Julianne Palmer, MD
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: 33 Lyman St Ste 400, Westborough, MA 01581
Phone: 508-898-0055    
Dr. Cuneyt Iscan, M.D.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 33 Lyman St Ste 400, Westborough, MA 01581
Phone: 508-898-0055    Fax: 508-898-0035
Steven I Benyas, M.D.
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 45 Lyman St, Suite 19, Westborough, MA 01581
Phone: 617-792-4879    
Alvaro B Lopez, MD
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 21 South St, Apt 37, Westborough, MA 01581
Phone: 508-836-8984    Fax: 508-836-8984
Dr. Kenneth L Appelbaum, M.D.
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 1 Research Dr, Suite 120c, Westborough, MA 01581
Phone: 508-475-3236    

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.

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