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SISLEN & ASSOCIATES
NPI 1306016035
Internal Medicine in Washington, DC

Active since March 10, 2008
1120 19TH STREET NW, SUITE 200, WASHINGTON, DC 20036(202) 296-0670(202) 331-8924 Get Directions Write a Review

NPPES record last updated: December 23, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Sislen & Associates NPPES

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

SISLEN & ASSOCIATES (NPI 1306016035) is a healthcare organization registered as an internal medicine in Washington, District Of Columbia and active in the NPI registry since March 2008. The organization lists James N Ramey, Md, as its authorized official.

NPPES Registry Identity

NPI1306016035
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameMAURICE A SISLEN GILBERT M EISNER RICHARD M KAUFMAN JAMES N RAMEY MORT
Location Address1120 19TH STREET NW, SUITE 200Washington, DC 20036
Mailing Address1120 19th Street Nw, Suite 200Washington, DC 20036 · (202) 296-0670 · Fax (202) 331-8924
Phone(202) 296-0670
Fax(202) 331-8924
Organization SubpartNo
Authorized OfficialJames N RameyMd · (202) 296-0670
Enumeration DateMarch 10, 2008
Last NPPES UpdateDecember 23, 2008
✔ NPI 1306016035 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1120 19TH STREET NW, Washington, DC 20036
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Other Names 1

Other NameSislen & Associates

Other Identifiers 1

Medicare PING00241DC

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sislen & Associates is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

3

Medicare enrollment records show 3 clinicians reassign Medicare billing to Sislen & Associates, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (3)

Jessica Osborn, MD
Internal Medicine
NPI 1073610887
1120 19TH ST NW SUITE #200
Washington, DC 20036
(202) 296-0670
✔ PECOSSame address
Lucy Chang, MD
Internal Medicine
NPI 1629137872
1120 19TH STREET NW SUITE 200
Washington, DC 20036
(202) 296-0670
✔ PECOSSame address
Nicole Singh, MD
Internal Medicine
NPI 1629182324
1860 TOWN CENTER DR STE 255
Reston, VA 20190
(703) 707-0607
✔ PECOS18 mi

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

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 Maurice A Sislen Gilbert M Eisner Richard M Kaufman James N Ramey Mort's NPI number?

The NPI number for Maurice A Sislen Gilbert M Eisner Richard M Kaufman James N Ramey Mort is 1306016035. It was assigned to this organization in the NPPES registry on March 10, 2008. The provider is also known as Sislen & Associates.

Where is Maurice A Sislen Gilbert M Eisner Richard M Kaufman James N Ramey Mort located?

Maurice A Sislen Gilbert M Eisner Richard M Kaufman James N Ramey Mort is located at 1120 19th Street NW Suite 200, Washington, DC 20036. The listed phone number is (202) 296-0670.

What is Maurice A Sislen Gilbert M Eisner Richard M Kaufman James N Ramey Mort's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Maurice A Sislen Gilbert M Eisner Richard M Kaufman James N Ramey Mort enrolled in Medicare?

Yes. Maurice A Sislen Gilbert M Eisner Richard M Kaufman James N Ramey Mort is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Maurice A Sislen Gilbert M Eisner Richard M Kaufman James N Ramey Mort?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians, all in Internal Medicine, reassign their Medicare billing to Maurice A Sislen Gilbert M Eisner Richard M Kaufman James N Ramey Mort. A 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 the clinician's services. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Maurice A Sislen Gilbert M Eisner Richard M Kaufman James N Ramey Mort was last updated on December 23, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.