DR. MARK H SNYDER MD
NPI 1982766572
Internal Medicine - Infectious Disease in Rockville, MD

NPI Status: Active since December 14, 2006

Contact Information

2101 EAST JEFFERSON STREET
ROCKVILLE, MD
ZIP 20852
Phone: (301) 816-6425
Fax: (301) 816-7115

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  • Individual
  • Male
  • Internal Medicine
  • Infectious Disease

About MARK SNYDER

This page provides the complete NPI Profile along with additional information for Mark Snyder, an internist established in Rockville, Maryland with a medical specialization in Internal Medicine, focusing in infectious disease . The healthcare provider is registered in the NPI registry with number 1982766572 assigned on December 2006. The practitioner's primary taxonomy code is 207RI0200X with license number D27890 (MD). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1982766572
Provider Name
DR. MARK H SNYDER MD
Gender
Male
Entity Type
Individual
Location Address
2101 EAST JEFFERSON STREET ROCKVILLE, MD 20852
Location Phone
(301) 816-6425
Location Fax
(301) 816-7115
Mailing Address
2101 E JEFFERSON ST PPQA MEDICARE COMPLIANCE UNIT 6 W KAISER PERMANENTE MID ATL PERM MED GRP PC ATTN T BROOKS ROCKVILLE, MD 20852
Mailing Phone
(301) 816-6660
Mailing Fax
(301) 816-6308
Is Sole Proprietor?
No
Enumeration Date
12-14-2006
Last Update Date
09-11-2025
Code Navigator

An internist like Mark Snyder is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Internal Medicine Infectious Disease

Taxonomy Code
207RI0200X
Type
Allopathic & Osteopathic Physicians
License No.
D27890
License State
MD
Taxonomy Description
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1207R00000XAllopathic & Osteopathic Physicians

Internal Medicine

D27890 (MD)

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NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1982766572, we treat the final digit (2) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 2).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
9
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
2
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
6
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
5
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
2
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 8 → 16 → 7 7 → 14 → 5 6 → 12 → 3 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 9 + 1 + 6 + 2 + 1 + 4 + 6 + 1 + 2 + 5 + 1 + 4 + 24 = 68

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 68 is 70. The difference is the calculated check digit.

70 - 68 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1982766572.

Other Providers at the Same Location


The following 12 providers are registered at the same or a nearby location.

Pediatrics
2101 EAST JEFFERSON STREET, QUALITY 2 WEST
ROCKVILLE, MD 20852
Internal Medicine
2101 EAST JEFFERSON STREET
ROCKVILLE, MD 20852
Pediatrics
2101 EAST JEFFERSON STREET
ROCKVILLE, MD 20852
Family Medicine
2101 EAST JEFFERSON STREET
ROCKVILLE, MD 20852
Nurse Practitioner
2101 EAST JEFFERSON STREET
ROCKVILLE, MD 20852
Pediatrics
2101 EAST JEFFERSON STREET, KAISER PERMANENTE, PPQA, 6 WEST, ATTN THERESA BROOKS
ROCKVILLE, MD 20852
Health Maintenance Organization
2101 EAST JEFFERSON STREET
ROCKVILLE, MD 20852
Nurse Practitioner
2101 EAST JEFFERSON STREET
ROCKVILLE, MD 20852
Internal Medicine
2101 EAST JEFFERSON STREET, SUITE 6W PPQA
ROCKVILLE, MD 20852
Internal Medicine
2101 EAST JEFFERSON STREET, KAISER PERMANENTE
ROCKVILLE, MD 20852
Surgery (Vascular Surgery)
2101 EAST JEFFERSON STREET, SUITE 6W PPQA
ROCKVILLE, MD 20852
Internal Medicine (Pulmonary Disease)
2101 EAST JEFFERSON STREET
ROCKVILLE, MD 20852

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1982766572, enumerated as an "individual" on December 14, 2006.

The provider is located at 2101 EAST JEFFERSON STREET ROCKVILLE, MD 20852 and the phone number is (301) 816-6425.

Internal Medicine with taxonomy code 207RI0200X and a focus in Infectious Disease.