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DR. GAIL L SEIKEN M.D.
NPI 1003860198
Internal Medicine - Nephrology in Bethesda, MD

Active since May 22, 2006PECOS Enrolled
4915 AUBURN AVE, SUITE 104, BETHESDA, MD 20814(301) 907-4646(301) 907-7796 Get Directions Write a Review

NPPES record last updated: June 16, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Gail L Seiken M.d. NPPES

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

DR. GAIL L SEIKEN M.D. (NPI 1003860198) is an individual nephrology provider in Bethesda, Maryland, licensed in Maryland (D0057699) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1003860198
Entity TypeIndividualFemale
Primary Taxonomy207RN0300X
Provider Legal NameDR. GAIL L SEIKENCredential: M.D.
Location Address4915 AUBURN AVE, SUITE 104Bethesda, MD 20814-2636
Mailing Address4915 Auburn Ave, Suite 200Bethesda, MD 20814-2636 · (301) 907-3939 · Fax (301) 656-3943
Phone(301) 907-4646
Fax(301) 907-7796
Sole ProprietorNo
Enumeration DateMay 22, 2006
Last NPPES UpdateJune 16, 2008
✔ NPI 1003860198 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in MD · D0057699
Definition
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.
4915 AUBURN AVE, Bethesda, MD 20814
Open in Google Maps ↗

Other Identifiers 2

Medicare UPING67813MD
Medicare ID-Type Unspecified000777W93DC

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Gail L Seiken M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Gail Seiken reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Washington Nephrology Associates, L.L.P.
6.1 mi
Nephrology
1201 SEVEN LOCKS RD STE 200
Rockville, MD 20854
  • Reassigned Medicare billing, District of Columbia and Maryland enrollments
  • Medicare enrollment name: Washington Nephrology Associates LLP
  • 41 clinicians in this Medicare group
NPI 1124193479 (301) 907-4646

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
170 services65 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
68 services68 patients
Dialysis services, 4 or more physician visits per month (20 years or older) 90960
Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.
56 services39 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
48 services48 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
39 services37 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
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.
38 services25 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20814 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 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PLEASANT HEALTH SERVICES INC
Program of All-Inclusive Care for the Elderly (PACE) Provider Organization
4915 AUBURN AVE, C/O DR. KALDUN NOSSULI, SUITE 306
BETHESDA, MD 20814
Montgomery County (301) 460-6372
GENARDRA PUGH LGPC
Counselor (Professional)
4915 AUBURN AVE, SUITE 102
BETHESDA, MD 20814
Montgomery County (301) 661-3481
DR. JAVED RAHMAT M.D.
Internal Medicine (Nephrology)
4915 AUBURN AVE, SUITE 104
BETHESDA, MD 20814
Montgomery County (301) 907-4646
EAST COAST BEHAVIORAL HEALTH, LLC
Community/Behavioral Health
4915 AUBURN AVE, SUITE 102
BETHESDA, MD 20814
Montgomery County (301) 830-2347
BETHESDA ALLERGY, ASTHMA, AND RESEARCH CENTER, LLC
Allergy & Immunology
4915 AUBURN AVE, SUITE 202
BETHESDA, MD 20814
Montgomery County (301) 907-3442
DR. AHMED KALDUN NOSSULI M.D.
Internal Medicine (Nephrology)
4915 AUBURN AVE, SUITE 104
BETHESDA, MD 20814
Montgomery County (301) 907-4646
INGRID ZOOI CONKLIN LCSW-C
Social Worker (Clinical)
4915 AUBURN AVE, SUITE 110
BETHESDA, MD 20814
Montgomery County (301) 718-2970
DR. GORDON DAVID RAPHAEL M.D.
Allergy & Immunology
4915 AUBURN AVE, SUITE 202
BETHESDA, MD 20814
Montgomery County (301) 907-3442

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 Gail Seiken's NPI number?

The NPI number for Gail Seiken is 1003860198. It was assigned to this individual provider in the NPPES registry on May 22, 2006.

Where is Gail Seiken located?

Gail Seiken practices at 4915 Auburn Ave Suite 104, Bethesda, MD 20814. The listed phone number is (301) 907-4646.

What is Gail Seiken's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Gail Seiken enrolled in Medicare?

Yes. Gail Seiken is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Gail Seiken's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gail Seiken reassigns Medicare benefits to Washington Nephrology Associates, L.L.P. (Rockville, MD). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gail Seiken's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Gail Seiken was last updated on June 16, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.