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ZACHARY SAXE SAGER M.D.
NPI 1396183125
Psychiatry & Neurology - Hospice and Palliative Medicine in Boston, MA

Active since June 14, 2013PECOS EnrolledAccepts Medicare Assignment
450 BROOKLINE AVE, BOSTON, MA 02215(617) 632-6464(617) 632-6180 Get Directions Write a Review

NPPES record last updated: April 11, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Zachary Saxe Sager M.d. NPPES

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

ZACHARY SAXE SAGER M.D. (NPI 1396183125) is an individual hospice and palliative medicine provider in Boston, Massachusetts, licensed in Massachusetts (271243) and active in the NPI registry since June 2013. He is enrolled in Medicare PECOS, maintains a secondary practice location in Louisville, and is a graduate of Other (2013).

NPPES Registry Identity

NPI1396183125
Entity TypeIndividualMale
Primary Taxonomy2084H0002X
Provider Legal NameZACHARY SAXE SAGERCredential: M.D.
Location Address450 BROOKLINE AVEBoston, MA 02215
Mailing Address450 Brookline AveBoston, MA 02215-5450 · (617) 632-6464 · Fax (617) 632-6180
Phone(617) 632-6464
Fax(617) 632-6180
Sole ProprietorNo
Medical School CMSOtherGraduated 2013
Enumeration DateJune 14, 2013
Last NPPES UpdateApril 11, 2019
✔ NPI 1396183125 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Hospice and Palliative MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2084H0002X
License✔ Licensed in MA · 271243
Definition
A psychiatrist or neurologist with special knowledge and skills to prevent and relieve the suffering experienced by patients with life-limiting illnesses. This specialist works with an interdisciplinary hospice or palliative care team to maximize quality of life while addressing physical, psychological, social and spiritual needs of both patient and family throughout the course of the disease, through the dying process, and beyond for the family. This specialist has expertise in the assessment of patients with advanced disease; the relief of distressing symptoms; the coordination of interdisciplinary patient and family-centered care in diverse venues; the use of specialized care systems including hospice; the management of the imminently dying patient; and legal and ethical decision making in end-of-life care.
Also ListedPsychiatry & Neurology · PsychiatryTaxonomy 2084P0800X · License 271243 (MA)
450 BROOKLINE AVE, Boston, MA 02215
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Secondary Practice Location 1

Location 1550 S Jackson St, 1st floorLouisville, KY 40202-1622 · Phone (502) 852-5395 · Fax (502) 852-3751

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Taro Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Zachary Saxe Sager M.d. 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 ID7719208883
PECOS Enrollment IDI20171016000211
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 Reassignments

4

Medicare enrollment records show Zachary Sager reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Dana-Farber Cancer Institute, Inc.
Same address
General Acute Care Hospital
450 BROOKLINE AVE
Boston, MA 02215
  • Reassigned Medicare billing, Massachusetts enrollment
  • Also billed through NPI 1346433257 (Massachusetts)
  • 1,026 clinicians in this Medicare group
NPI 1851333686 (617) 632-3000
Beth Israel Deaconess Medical Center, Inc.
0.2 mi
General Acute Care Hospital
330 BROOKLINE AVE, ST 207
Boston, MA 02215
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,477 clinicians in this Medicare group
NPI 1548202641 (617) 667-1961
Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc
0.2 mi
Psychiatry
330 BROOKLINE AVE
Boston, MA 02215
  • Reassigned Medicare billing, Massachusetts enrollment
  • 118 clinicians in this Medicare group
NPI 1770524373 (617) 667-4654
Care Dimensions, Inc.
17 mi
Case Management
75 SYLVAN ST, SUITE B-102
Danvers, MA 01923
  • Reassigned Medicare billing, Massachusetts enrollment
  • 64 clinicians in this Medicare group
NPI 1316084890 (978) 774-7566

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

Areas of Expertise CMS Part B claims 5

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
115 services43 patients
Telephone medical discussion with physician, 21-30 minutes 99443
This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.
22 services15 patients
Telephone medical discussion with physician, 21-30 minutes 99443
This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.
20 services15 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
13 services11 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
12 services12 patients

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.

PRABHSIMRANJOT SINGH MD
Internal Medicine (Hematology & Oncology)
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 582-7956
SHAWN MAGUIRE PA-C
Physician Assistant
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 582-8487
KARINA FRANCA
Genetic Counselor, MS
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (857) 215-2285
DR. SUZANNE JAQUETH FORREST M.D.
Pediatrics (Pediatric Hematology-Oncology)
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 632-3270
LAUREN KIRITSY MSW, LCSW
Counselor (Mental Health)
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (857) 215-3448
OFIR WOLAJ MD
Internal Medicine (Hematology & Oncology)
450 BROOKLINE AVE, DANA 2058
BOSTON, MA 02215
Suffolk County (617) 632-6139
JASON BATALHA AGPCNP-BC
Nurse Practitioner
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 632-6140
FATIMA EMRAN AMIR MS, LGC
Genetic Counselor, MS
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 632-3729

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 Zachary Sager's NPI number?

The NPI number for Zachary Sager is 1396183125. It was assigned to this individual provider in the NPPES registry on June 14, 2013.

Where is Zachary Sager located?

Zachary Sager practices at 450 Brookline Ave, Boston, MA 02215. The listed phone number is (617) 632-6464.

What is Zachary Sager's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Hospice and Palliative Medicine, with taxonomy code 2084H0002X.

Is Zachary Sager enrolled in Medicare?

Yes. Zachary Sager 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.

Which organizations bill Medicare for Zachary Sager's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Zachary Sager reassigns Medicare benefits to 4 organizations: Dana-Farber Cancer Institute, Inc. (Boston, MA), Beth Israel Deaconess Medical Center, Inc. (Boston, MA), Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (Boston, MA) and Care Dimensions, Inc. (Danvers, MA). Each 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 Zachary Sager's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Zachary Sager accept?

Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Zachary Sager 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 Zachary Sager was last updated on April 11, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years 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.