1. Home
  2. Directory
  3. Maryland
  4. Silver Spring
  5. Internal Medicine
  6. NPI Profile

DR. MARK HERSHEL EIG M.D.
NPI 1043377880
Internal Medicine in Silver Spring, MD

Active since January 02, 2007Opted out of Medicare · through Jan 1, 2027
10801 LOCKWOOD DR, STE 280, SILVER SPRING, MD 20901(301) 592-1220(301) 592-0440 Get Directions Write a Review

NPPES record last updated: May 7, 2008. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Mark Hershel Eig M.d. NPPES

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

DR. MARK HERSHEL EIG M.D. (NPI 1043377880) is an individual internal medicine provider in Silver Spring, Maryland, licensed in Maryland (D024886) and active in the NPI registry since January 2007. He has opted out of Medicare through January 1, 2027.

NPPES Registry Identity

NPI1043377880
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. MARK HERSHEL EIGCredential: M.D.
Location Address10801 LOCKWOOD DR, STE 280Silver Spring, MD 20901-1556
Mailing Address10801 Lockwood Dr, Ste 280Silver Spring, MD 20901-1556 · (301) 592-1220 · Fax (301) 592-0440
Phone(301) 592-1220
Fax(301) 592-0440
Sole ProprietorYes
Enumeration DateJanuary 2, 2007
Last NPPES UpdateMay 7, 2008
✔ NPI 1043377880 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MD · D024886
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
10801 LOCKWOOD DR, Silver Spring, MD 20901
Open in Google Maps ↗

Other Identifiers 2

Medicare PIN491114MD
Medicare UPINB94804MD

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Mark Hershel Eig M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 1, 2013 through January 1, 2027.

Opt-Out Effective DateJanuary 1, 2013
Opt-Out In Effect ThroughJanuary 1, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20901 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$147.85 typical visit price
range $65.18 – $194.86
Typical copayment $36.96 (range $16.29 – $48.71)
Most-billed visit code 99204
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

MRS. KELLY ANN MERCADO CRNP
Nurse Practitioner (Family)
10801 LOCKWOOD DR, SUITE 200
SILVER SPRING, MD 20901
Montgomery County (301) 593-2002
VERA OGEMBO FNP-C
Nurse Practitioner (Family)
10801 LOCKWOOD DR, SUITE 140
SILVER SPRING, MD 20901
Montgomery County (301) 592-1780
MARCEL KRYSANTHE EDWARDS-BAYO NP
Nurse Practitioner (Gerontology)
10801 LOCKWOOD DR
SILVER SPRING, MD 20901
Montgomery County (301) 298-1040
DR. JOSEPH JOHN GENOVESE JR. M.D.
Internal Medicine (Gastroenterology)
10801 LOCKWOOD DR, SUITE 200
SILVER SPRING, MD 20901
Montgomery County (301) 593-2002
DR. STEPHEN D. HUMM MD
Internal Medicine (Gastroenterology)
10801 LOCKWOOD DR, SUITE 200
SILVER SPRING, MD 20901
Montgomery County (301) 593-2002
LOCKWOOD AMBULATORY SURGERY CENTER
Clinic/Center (Ambulatory Surgical)
10801 LOCKWOOD DR, SUITE 260
SILVER SPRING, MD 20901
Montgomery County (301) 924-5044
ADELL C. WINLEY P.A.
Physician Assistant
10801 LOCKWOOD DR, SUITE 200
SILVER SPRING, MD 20901
Montgomery County (301) 593-2002
CAPITAL DIGESTIVE CARE LLC
Internal Medicine (Gastroenterology)
10801 LOCKWOOD DR, SUITE 200
SILVER SPRING, MD 20901
Montgomery County (301) 593-2002

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 Mark Eig's NPI number?

The NPI number for Mark Eig is 1043377880. It was assigned to this individual provider in the NPPES registry on January 2, 2007.

Where is Mark Eig located?

Mark Eig practices at 10801 Lockwood Dr Ste 280, Silver Spring, MD 20901. The listed phone number is (301) 592-1220.

What is Mark Eig's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mark Eig enrolled in Medicare?

No. Mark Eig has opted out of Medicare through January 1, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Mark Eig was last updated on May 7, 2008. NPI Profile syncs with the weekly NPPES data releases published by CMS.