DR. ROBERT LEROY MCDOWELL JR. M.D.
NPI 1750436853
Pediatrics - Neonatal-Perinatal Medicine in Washington, DC

NPI Status: Active since January 25, 2007

Contact Information

4900 MASSACHUSETTS AVE NW
WASHINGTON, DC
ZIP 20016
Phone: (202) 966-5000

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  • Individual
  • Male
  • Pediatrics
  • Neonatal-Perinatal Medicine
  • PECOS Enrolled
  • Opted-Out Medicare

About ROBERT MCDOWELL

This page provides the complete NPI Profile along with additional information for Robert Mcdowell, a pediatrician established in Washington, District Of Columbia with a medical specialization in Pediatrics, focusing in neonatal-perinatal medicine . The healthcare provider is registered in the NPI registry with number 1750436853 assigned on January 2007. The practitioner's primary taxonomy code is 2080N0001X with license number 10770 (DC). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1750436853
Provider Name
DR. ROBERT LEROY MCDOWELL JR. M.D.
Gender
Male
Entity Type
Individual
Location Address
4900 MASSACHUSETTS AVE NW WASHINGTON, DC 20016
Location Phone
(202) 966-5000
Mailing Address
4821 FORT SUMNER DR BETHESDA, MD 20816
Mailing Phone
(301) 320-3208
Is Sole Proprietor?
Yes
Enumeration Date
01-25-2007
Last Update Date
09-11-2025
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A pediatrician like Robert Mcdowell is a physician who has completed a pediatric residency and is board-certified or board-eligible in a pediatric specialty. Pediatric care providers are trained to care for newborns, infants, children and adolescents. A pediatrician could perform physical exams, manage vaccinations, monitor development milestones, diagnose illnesses, infections, injuries or other health problems, etc.

The provider doesn't accept Medicare and has signed an affidavit to be excluded from the Medicare program. If you are a Medicare beneficiary this means a provider can charge whatever they want for services rendered but must follow certain rules to do so. Robert Mcdowell opted out of Medicare effective on 12-18-2015 until 12-18-2025. Opt out periods last for two years and cannot be terminated unless the provider is opting out for the very first time and the affidavit is terminated no later than 90 days after the opt out effective date. Opt-out affidavits might renew automatically renew every two years. The provider opted out of Medicare but is permitted to order and refer services to other healthcare providers.

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

Pediatrics Neonatal-Perinatal Medicine

Taxonomy Code
2080N0001X
Type
Allopathic & Osteopathic Physicians
License No.
10770
License State
DC
Taxonomy Description
A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.

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)
1208000000XAllopathic & Osteopathic Physicians

Pediatrics

10770 (DC)

Medicare Participation & PECOS Enrollment Status

Robert Mcdowell is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • Opted-Out of Medicare? Yes

  • Opt-Out Effective Date: 12-18-2015

  • Opt-Out End Date: 12-18-2025

  • Eligible to Order and Refer? Yes

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Reviews for DR. ROBERT LEROY MCDOWELL JR. M.D.

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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 1750436853, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).

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
7
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
0
Unchanged
Pos 5
4
Doubled → 8
Pos 6
3
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
8
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
3
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 5 → 10 → 1 4 → 8 6 → 12 → 3 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 0 + 0 + 8 + 3 + 1 + 2 + 8 + 1 + 0 + 24 = 57

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

The next multiple of ten after 57 is 60. The difference is the calculated check digit.

60 - 57 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1750436853.

Other Providers at the Same Location


The following 17 providers are registered at the same or a nearby location.

Counselor (Professional)
4900 MASSACHUSETTS AVE NW, SUITE 111
WASHINGTON, DC 20016
Pharmacy (Community/Retail Pharmacy)
4900 MASSACHUSETTS AVE NW
WASHINGTON, DC 20016
Pediatrics
4900 MASSACHUSETTS AVE NW, LOWER LEVEL
WASHINGTON, DC 20016
Pediatrics
4900 MASSACHUSETTS AVE NW, LOWER LEVEL
WASHINGTON, DC 20016
Pediatrics
4900 MASSACHUSETTS AVE NW, LOWER LEVEL
WASHINGTON, DC 20016
Clinical Neuropsychologist
4900 MASSACHUSETTS AVE NW, SUITE 240
WASHINGTON, DC 20016
Internal Medicine (Cardiovascular Disease)
4900 MASSACHUSETTS AVE NW, SUITE 300
WASHINGTON, DC 20016
Home Health Aide
4900 MASSACHUSETTS AVE NW, SUITE 220
WASHINGTON, DC 20016
Dentist (General Practice)
4900 MASSACHUSETTS AVE NW, SUITE 200
WASHINGTON, DC 20016
Dentist (General Practice)
4900 MASSACHUSETTS AVE NW, SUITE 200
WASHINGTON, DC 20016
Home Health Aide
4900 MASSACHUSETTS AVE NW, SUITE 220
WASHINGTON, DC 20016
Pediatrics
4900 MASSACHUSETTS AVE NW
WASHINGTON, DC 20016
Home Health Aide
4900 MASSACHUSETTS AVE NW, SUITE 330
WASHINGTON, DC 20016
Chiropractor
4900 MASSACHUSETTS AVE NW, SUITE 250
WASHINGTON, DC 20016
Technician/Technologist (Optician)
4900 MASSACHUSETTS AVE NW
WASHINGTON, DC 20016
Dentist (General Practice)
4900 MASSACHUSETTS AVE NW
WASHINGTON, DC 20016
Chiropractor
4900 MASSACHUSETTS AVE NW, SUITE 250
WASHINGTON, DC 20016

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1750436853, enumerated as an "individual" on January 25, 2007.

The provider is located at 4900 MASSACHUSETTS AVE NW WASHINGTON, DC 20016 and the phone number is (202) 966-5000.

Pediatrics with taxonomy code 2080N0001X and a focus in Neonatal-Perinatal Medicine.