DR. CATHY J ZACK (MD) – Family Medicine Physician, NPI 1003828435

DR. CATHY J ZACK (MD) is a healthcare provider. based in Farmington, Connecticut. specializing in FAMILY PRACTICE, HOSPITALIST. They hold the professional credentials MD. They hold a License No. 030910 (CT). The NPI Number for DR. CATHY J ZACK (MD) is 1003828435

Main info

Female
38 Years Of Experience
Accepts Medicare Assignment
Name
DR. CATHY J ZACK (MD)
NPI
1003828435
Phone
(860) 284-5200
Address
4 FARM SPRINGS RD
Enumeration Date
13 August 2006
Last Update Date
4 May 2017

Doctor Profile

Medical School Name
GEISEL SCHOOL OF MEDICINE AT DARTMOUTH
Secondary Phone
8603585322
Graduation Year
1988 (38 years ago)
PAC ID
2466342464
Group Practice PAC ID
5092611731
Professional Enrollment ID
I20040316000025
Address ID
CT064573654MI28XXXSTXX300
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience57
Completeness75
Years active:19State licenses:1Digital endpointsOther names

822 FAMILY PRACTICE in CT

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Provider Addresses for DR. CATHY J ZACK (MD)

  • 4, Farm Springs Road, Farmington, Hartford County, Connecticut, 06032, United States

    PROHEALTH PHYSICIANS

    FARMINGTON, CT 060322573

    Phone: (860) 284-5200

    Fax: (860) 284-5333

    Type: Mailing

  • 120, Main Street, Belltown Historic District, East Hampton, Lower Connecticut River Valley Planning Region, Connecticut, 06424, United States

    EAST HAMPTON, CT 064241123

    Phone: (860) 267-2593

    Fax: (860) 267-4889

    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: 2004-03-16

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

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20040316000025IFamily PracticeCTTBD

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.

Verify on CMS Revalidation Lookup Tool

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

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99223Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes129125$0
99222Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes1414$0
View full utilization report →

Insurance plans in this area (ZIP 06032)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 5092611731View full group profile
NameSpecialtyState
-CT
H O S P I T A L I S TDC
H O S P I T A L I S TCT
Nurse PractitionerCT
Family Practice, Geriatric MedicineCT
-CT
H O S P I T A L I S TCT
-CT
Physician AssistantCT
Family PracticeCT

Reviews

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Frequently asked questions

What is the registry number for DR. CATHY J ZACK (MD)?
The registry entry for DR. CATHY J ZACK (MD) shows NPI 1003828435.
Is DR. CATHY J ZACK (MD)'s NPI status active today?
Active status means DR. CATHY J ZACK (MD)'s NPI record is not deactivated in the public file.
Which specialty label fits DR. CATHY J ZACK (MD)?
NPPES ties DR. CATHY J ZACK (MD) to Family Medicine Physician in the taxonomy section. Clinical services aligned with this taxonomy classification.
Which community is linked to DR. CATHY J ZACK (MD)?
DR. CATHY J ZACK (MD) shows a connection to Farmington, Connecticut in registry-derived data.
What is the difference between NPI and a medical license?
An NPI is a federal identifier; a medical license is issued by a state and governs where someone may practice.

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