DR. GILDA-RAE GRELL MD
NPI 1467087650
Internal Medicine - Nephrology in Washington, DC

NPI Status: Active since March 08, 2020

Contact Information

106 IRVING ST NW
STE 422 POB SOUTH TOWER
WASHINGTON, DC
ZIP 20010
Phone: (202) 877-0698
Fax: (202) 877-6959

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  • Individual
  • Female
  • Years of Experience 7
  • Internal Medicine
  • Nephrology
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About GILDA-RAE GRELL

This page provides the complete NPI Profile along with additional information for Gilda-rae Grell, an internist established in Washington, District Of Columbia with a medical specialization in Internal Medicine, focusing in nephrology and more than 7 years of experience. The healthcare provider is registered in the NPI registry with number 1467087650 assigned on March 2020. The practitioner's primary taxonomy code is 207RN0300X with license number MD600003902 (DC). The provider is registered as an individual and her NPI record was last updated June 2026.

NPI
1467087650
Provider Name
DR. GILDA-RAE GRELL MD
Gender
Female
Entity Type
Individual
Location Address
106 IRVING ST NW STE 422 POB SOUTH TOWER WASHINGTON, DC 20010
Location Phone
(202) 877-0698
Location Fax
(202) 877-6959
Mailing Address
106 IRVING ST NW STE 422 POB SOUTH TOWER WASHINGTON, DC 20010
Mailing Phone
(202) 877-0698
Mailing Fax
(202) 877-6959
Medical School Name
OTHER
Graduation Year
2019
Is Sole Proprietor?
Yes
Enumeration Date
03-08-2020
Last Update Date
06-05-2026
Code Navigator

An internist like Gilda-rae Grell 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

Secondary Locations

  • 1500 Forest Glen Rd
    Silver Spring, MD 20910
    (202) 877-0698

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 Nephrology

Taxonomy Code
207RN0300X
Type
Allopathic & Osteopathic Physicians
License No.
MD600003902
License State
DC
Taxonomy Description
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

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

32701201 (NY)
2207RN0300XAllopathic & Osteopathic Physicians

Internal Medicine
Nephrology

D0104008 (MD)
3390200000XStudent, Health Care

Student in an Organized Health Care Education/Training Program

 

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
390200000XOTHER (01)NYTAXONOMY CODE

Medicare Participation & PECOS Enrollment Status

Gilda-rae Grell is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Gilda-rae Grell 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

  • PECOS PAC ID: 5890132047

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20240322002747, I20250630001888

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • 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

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

This service was performed 36 times for 21 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $36.96 for a new patient copayment and $28.43 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 20010 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $147.85
  • Minimum New Patient Price $65.18
  • Maximum New Patient Price $194.86
  • Average New Patient Copayment $36.96
  • Minimum New Patient Copayment $16.29
  • Maximum New Patient Copayment $48.71

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $113.72
  • Minimum Established Patient Price $21.4
  • Maximum Established Patient Price $158.88
  • Average Established Patient Copayment $28.43
  • Minimum Established Patient Copayment $5.35
  • Maximum Established Patient Copayment $39.72

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Gilda-rae Grell is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
HOLY CROSS HOSPITAL1500 FOREST GLEN ROAD
SILVER SPRING, MD 20910
(301) 754-7000Acute Care Hospitals
LUMINIS HEALTH DOCTORS COMMUNITY MEDICAL CTR, INC8118 GOOD LUCK ROAD
LANHAM, MD 20706
(301) 552-8118Acute Care Hospitals
MEDSTAR SOUTHERN MARYLAND HOSPITAL CENTER7503 SURRATTS ROAD
CLINTON, MD 20735
(301) 868-8000Acute Care Hospitals
BROOKDALE HOSPITAL MEDICAL CENTER1 BROOKDALE PLAZA
BROOKLYN, NY 11212
(718) 240-5966Acute Care Hospitals

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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 1467087650, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).

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
6
Doubled → 12 → 1 + 2
Pos 4
7
Unchanged
Pos 5
0
Doubled → 0
Pos 6
8
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
6
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
0
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 6 → 12 → 3 0 → 0 7 → 14 → 5 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 1 + 2 + 7 + 0 + 8 + 1 + 4 + 6 + 1 + 0 + 24 = 60

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

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

60 - 60 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1467087650.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Ophthalmology
106 IRVING ST NW, SUITE 321
WASHINGTON, DC 20010
Internal Medicine
106 IRVING ST NW, SUITE 421-SOUTH
WASHINGTON, DC 20010
Internal Medicine (Cardiovascular Disease)
106 IRVING ST NW, SUITE 1500 NORTH TOWER
WASHINGTON, DC 20010
Midwife
106 IRVING ST NW, SUITE 4700 NORTH
WASHINGTON, DC 20010
Internal Medicine (Nephrology)
106 IRVING ST NW, STE 418
WASHINGTON, DC 20010
Surgery (Surgical Oncology)
106 IRVING ST NW, SUITE N-3900
WASHINGTON, DC 20010
Surgery (Surgical Oncology)
106 IRVING ST NW, SUITE N-3900
WASHINGTON, DC 20010
Internal Medicine (Nephrology)
106 IRVING ST NW, SUITE 418
WASHINGTON, DC 20010
Internal Medicine (Nephrology)
106 IRVING ST NW, SUITE 418
WASHINGTON, DC 20010
Internal Medicine (Gastroenterology)
106 IRVING ST NW, SUITE 2000
WASHINGTON, DC 20010
Specialist
106 IRVING ST NW, SUITE 4400 NORTH
WASHINGTON, DC 20010
Obstetrics & Gynecology
106 IRVING ST NW, SUITE 4400 NORTH
WASHINGTON, DC 20010
Podiatrist
106 IRVING ST NW, SUITE 402
WASHINGTON, DC 20010
Podiatrist
106 IRVING ST NW, SUITE 402
WASHINGTON, DC 20010
Internal Medicine
106 IRVING ST NW, 4200
WASHINGTON, DC 20010
Obstetrics & Gynecology
106 IRVING ST NW
WASHINGTON, DC 20010
Obstetrics & Gynecology (Maternal & Fetal Medicine)
106 IRVING ST NW, SUITE 3800N
WASHINGTON, DC 20010
Obstetrics & Gynecology
106 IRVING ST NW, SUITE 4400 NORTH
WASHINGTON, DC 20010
Surgery (Surgical Oncology)
106 IRVING ST NW, SUITE N-3900
WASHINGTON, DC 20010
Internal Medicine (Infectious Disease)
106 IRVING ST NW, SUITE NUMBER 208
WASHINGTON, DC 20010

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1467087650, enumerated as an "individual" on March 08, 2020.

The provider is located at 106 IRVING ST NW STE 422 POB SOUTH TOWER WASHINGTON, DC 20010 and the phone number is (202) 877-0698.

Internal Medicine with taxonomy code 207RN0300X and a focus in Nephrology.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.

Gilda-rae Grell is affiliated with: HOLY CROSS HOSPITAL, LUMINIS HEALTH DOCTORS COMMUNITY MEDICAL CTR, INC, MEDSTAR SOUTHERN MARYLAND HOSPITAL CENTER and BROOKDALE HOSPITAL MEDICAL CENTER.