DR. ROBERT G GREENFIELD M.D.
NPI 1487196366
General Practice in Silver Spring, MD

NPI Status: Active since November 09, 2016

Contact Information

8121 GEORGIA AVE
SILVER SPRING, MD
ZIP 20910
Phone: (301) 622-0112

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  • Individual
  • Male
  • General Practice

About ROBERT GREENFIELD

This page provides the complete NPI Profile along with additional information for Robert Greenfield, a primary care provider established in Silver Spring, Maryland with a medical specialization in General Practice. The healthcare provider is registered in the NPI registry with number 1487196366 assigned on November 2016. The practitioner's primary taxonomy code is 208D00000X with license number DOO36948 (MD). The provider is registered as an individual and his NPI record was last updated 10 years ago.

NPI
1487196366
Provider Name
DR. ROBERT G GREENFIELD M.D.
Gender
Male
Entity Type
Individual
Location Address
8121 GEORGIA AVE SILVER SPRING, MD 20910
Location Phone
(301) 622-0112
Mailing Address
605 SHERBROOK DR SILVER SPRING, MD 20904
Mailing Phone
(301) 675-6260
Is Sole Proprietor?
Yes
Enumeration Date
11-09-2016
Last Update Date
11-09-2016
Code Navigator

A primary care provider (PCP) like Robert Greenfield sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, 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

General Practice

Taxonomy Code
208D00000X
Type
Allopathic & Osteopathic Physicians
License No.
DOO36948
License State
MD
Taxonomy Description
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee

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NPI 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 1487196366, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 1 + 6 + 7 + 2 + 9 + 1 + 2 + 3 + 1 + 2 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1487196366.

Other Providers at the Same Location


The following 10 providers are registered at the same or a nearby location.

Family Medicine
8121 GEORGIA AVE, SUITE 405
SILVER SPRING, MD 20910
Physician Assistant
8121 GEORGIA AVE
SILVER SPRING, MD 20910
Physical Therapist (Orthopedic)
8121 GEORGIA AVE, 701-A
SILVER SPRING, MD 20910
Specialist
8121 GEORGIA AVE, SUITE 701-A
SILVER SPRING, MD 20910
Family Medicine
8121 GEORGIA AVE, SUITE 405
SILVER SPRING, MD 20910
Physical Therapist (Orthopedic)
8121 GEORGIA AVE, SUITE 720
SILVER SPRING, MD 20910
Orthopaedic Surgery
8121 GEORGIA AVE, 701-A
SILVER SPRING, MD 20910
Psychologist
8121 GEORGIA AVE
SILVER SPRING, MD 20910
Psychologist
8121 GEORGIA AVE
SILVER SPRING, MD 20910
Dentist
8121 GEORGIA AVE, SUITE 200
SILVER SPRING, MD 20910

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1487196366, enumerated as an "individual" on November 09, 2016.

The provider is located at 8121 GEORGIA AVE SILVER SPRING, MD 20910 and the phone number is (301) 622-0112.

General Practice with taxonomy code 208D00000X.