JACQUELINE JONKLAAS
NPI 1285633636
Internal Medicine - Endocrinology, Diabetes & Metabolism in Washington, DC
About Jacqueline Jonklaas NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JACQUELINE JONKLAAS (NPI 1285633636) is an individual endocrinology, diabetes & metabolism provider in Washington, District Of Columbia, licensed in District Of Columbia (30495) and active in the NPI registry since July 2005. She is enrolled in Medicare PECOS and is a graduate of Georgetown University School Of Medicine (1993).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Jacqueline Jonklaas is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Jacqueline Jonklaas reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20007
- Reassigned Medicare billing, District of Columbia enrollment
- 38 clinicians in this Medicare group
Washington, DC 20007
- Reassigned Medicare billing, District of Columbia enrollment
- 3,530 clinicians in this Medicare group
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 3
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20007 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
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 Jacqueline Jonklaas's NPI number?
The NPI number for Jacqueline Jonklaas is 1285633636. It was assigned to this individual provider in the NPPES registry on July 19, 2005.
Where is Jacqueline Jonklaas located?
Jacqueline Jonklaas practices at 3800 Reservoir Rd NW, Washington, DC 20007. The listed phone number is (202) 444-2818.
What is Jacqueline Jonklaas's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.
Is Jacqueline Jonklaas enrolled in Medicare?
Yes. Jacqueline Jonklaas is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Jacqueline Jonklaas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jacqueline Jonklaas reassigns Medicare benefits to 2 organizations: Medstar Georgetown Medical Center, Inc (Washington, DC) and Medstar Medical Group II LLC (Washington, DC). Each 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 Jacqueline Jonklaas'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 Jacqueline Jonklaas was last updated on March 8, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Jacqueline Jonklaas · NPI 1285633636
Endocrinology, Diabetes & Metabolism physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since July 19, 2005.
## Identity
- **NPI:** 1285633636 (Entity type: Individual)
- **Enumerated:** July 19, 2005
- **Primary specialty:** Internal Medicine - Endocrinology, Diabetes & Metabolism · taxonomy 207RE0101X
- **State license:** 30495 (District of Columbia)
- **Sole proprietor:** No
## Practice location
- **Address:** 3800 RESERVOIR RD NW, Washington, DC 20007-2113
- **Phone:** (202) 444-2818
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Medstar Georgetown Medical Center, Inc (NPI 1285636522, Washington, DC); Medstar Medical Group II LLC (NPI 1205562816, Washington, DC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Georgetown University School Of Medicine, class of 1993
## Record status
- **NPPES last updated:** March 8, 2012
- **Other identifiers:** Medicare PIN 000Y40G93 (DC); Medicare UPIN G65469
---
Source: [NPI Profile](https://npiprofile.com/npi/1285633636) · Data from the CMS NPPES public registry.