MARC I. UNTERMAN (MD) – Cardiovascular Disease Physician, NPI 1427044858

MARC I. UNTERMAN (MD) is a healthcare provider. based in Lawrenceville, Georgia. specializing in CARDIOVASCULAR DISEASE (CARDIOLOGY), INTERVENTIONAL CARDIOLOGY. They hold the professional credentials MD. They hold a License No. 19800 (GA). The NPI Number for MARC I. UNTERMAN (MD) is 1427044858

Main info

Male
49 Years Of Experience
Accepts Medicare Assignment
Name
MARC I. UNTERMAN (MD)
NPI
1427044858
Phone
(678) 312-9100
Address
766 WALTHER RD
Enumeration Date
21 September 2005
Last Update Date
28 June 2013

Doctor Profile

Medical School Name
EMORY UNIVERSITY SCHOOL OF MEDICINE
Secondary Phone
7707366300
Graduation Year
1977 (49 years ago)
PAC ID
7810948346
Group Practice PAC ID
0345321691
Professional Enrollment ID
I20050202000391
Address ID
GA300529138LO3435X81XX301
Telehealth
Yes
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience59
Completeness75
Years active:20State licenses:1Digital endpointsOther names

980 CARDIOVASCULAR DISEASE (CARDIOLOGY) in GA

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Provider Addresses for MARC I. UNTERMAN (MD)

  • 766, Walther Road Northwest, Lawrenceville, Gwinnett County, Georgia, 30046, United States

    SUITE 100

    LAWRENCEVILLE, GA 300468764

    Phone: (678) 312-9100

    Fax: (678) 312-9101

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 94 Open Payments records for all available years, with a total value of $2,047.

Total Amount is formed as General ($2,047) + Research ($0) + Ownership ($0) = $2,047.

Last reported payment date: 2024-12-20 • Largest payer in this snapshot: ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) ($363).

Total Amount

$2,047

General + Research + Ownership

Payments

94

Total payment records

General Amount

$2,047

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-12-20

Latest reported date

View all Open Payments →|Open Payments Risk Radar →

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: 2005-02-02

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
I20050202000391ICardiovascular Disease (Cardiology)GATBD

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
99213Established patient office or other outpatient visit, 20-29 minutes1,276804$0
99214Established patient office or other outpatient visit, 30-39 minutes530352$0
J2785Injection, regadenoson, 0.1 mg24461$0
93306Ultrasound of heart with color-depicted blood flow, rate, direction and valve function232231$0
93000Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report203193$0
View full utilization report →

Insurance plans in this area (ZIP 30046)

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Provider's Procedures

MARC I. UNTERMAN (MD) performs procedures in CARDIOVASCULAR DISEASE (CARDIOLOGY). See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
CARDIOVASCULAR DISEASE (CARDIOLOGY)GA78452Nuclear medicine study of vessels of heart using drugs or exercise multiple studies1515
CARDIOVASCULAR DISEASE (CARDIOLOGY)GA92928Catheter insertion of stents in major coronary artery or branch, accessed through the skin5343
CARDIOVASCULAR DISEASE (CARDIOLOGY)GA93010Routine electrocardiogram (EKG) using at least 12 leads with interpretation and report959668
CARDIOVASCULAR DISEASE (CARDIOLOGY)GA93458Insertion of catheter in left heart for imaging of blood vessels or grafts and left lower heart8583

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: 0345321691View full group profile
NameSpecialtyState
Nurse PractitionerTN
-GA
-GA
-GA
Nurse PractitionerGA
Internal MedicineOH
Nurse PractitionerGA
Advanced Heart Failure And Transplant Cardiology, Cardiovascular Disease (Cardiology)GA
Cardiovascular Disease (Cardiology)GA
-GA

Reviews

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Frequently asked questions

Can I verify MARC I. UNTERMAN (MD) with an NPI only?
You can start verification with NPI 1427044858 for MARC I. UNTERMAN (MD), then check state licensing separately.
Does CMS list MARC I. UNTERMAN (MD) as active?
Yes — MARC I. UNTERMAN (MD) is active in the NPI listing used on this page.
What is MARC I. UNTERMAN (MD)'s specialty?
The listing groups MARC I. UNTERMAN (MD) with Cardiovascular Disease Physician. Clinical services aligned with this taxonomy classification.
Where is MARC I. UNTERMAN (MD) based?
MARC I. UNTERMAN (MD) is tied to Lawrenceville, Georgia in the data we show; additional addresses may exist on the full record.
Why does MARC I. UNTERMAN (MD) have multiple addresses?
2 practice locations appear in the available data. Multiple addresses are common for hospital privileges, telehealth, or multi-site groups.

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