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DIANE WITKOWSKI
NPI 1720483456
Nurse Practitioner in Frederick, MD

Active since October 23, 2014PECOS EnrolledAccepts Medicare Assignment
617 W PATRICK ST, FREDERICK, MD 21701(240) 405-8084 Get Directions Write a Review

NPPES record last updated: June 13, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Diane Witkowski NPPES

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

DIANE WITKOWSKI (NPI 1720483456) is an individual nurse practitioner in Frederick, Maryland, licensed in Maryland (R186991) and active in the NPI registry since October 2014. She is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1720483456
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameDIANE WITKOWSKI
Location Address617 W PATRICK STFrederick, MD 21701-4027
Mailing Address912 Larch AveTakoma Park, MD 20912-5826 · (301) 270-8316
Phone(240) 405-8084
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateOctober 23, 2014
Last NPPES UpdateJune 13, 2025
NPPES CertifiedJune 13, 2025
✔ NPI 1720483456 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in MD · R186991
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
617 W PATRICK ST, Frederick, MD 21701
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Diane Witkowski 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.

PECOS PAC ID5294213831
PECOS Enrollment IDI20260204000115, I20260303000138
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21701 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
$89.75 typical visit price
range $57.99 – $175.57
Typical copayment $22.43 (range $14.49 – $43.89)
Most-billed visit code 99203
Established Patient
$102.11 typical visit price
range $18.66 – $143.02
Typical copayment $25.52 (range $4.66 – $35.75)
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 6

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

DR. MICHAEL KNABLE D.O.
Psychiatry & Neurology (Psychiatry)
617 W PATRICK ST
FREDERICK, MD 21701
Frederick County (240) 493-4900
ANNIE QUINLAN ATR
Counselor (Professional)
617 W PATRICK ST
FREDERICK, MD 21701
Frederick County (240) 439-4900
TOOVLY HEALTH INC
Community Based Residential Treatment Facility, Intellectual and/or Developmental Disabilities
617 W PATRICK ST
FREDERICK, MD 21701
Frederick County (443) 851-3748
CAROLINE CANTRELL LCSW-C
Social Worker (Clinical)
617 W PATRICK ST
FREDERICK, MD 21701
Frederick County (240) 439-4900
PELVRX
Clinic/Center (Physical Therapy)
617 W PATRICK ST
FREDERICK, MD 21701
Frederick County (301) 828-2247
DR. JASON MOEHRINGER PSY.D.
Psychologist
617 W PATRICK ST
FREDERICK, MD 21701
Frederick County (202) 573-9786

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 Diane Witkowski's NPI number?

The NPI number for Diane Witkowski is 1720483456. It was assigned to this individual provider in the NPPES registry on October 23, 2014.

Where is Diane Witkowski located?

Diane Witkowski practices at 617 W Patrick St, Frederick, MD 21701. The listed phone number is (240) 405-8084.

What is Diane Witkowski's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Diane Witkowski enrolled in Medicare?

Yes. Diane Witkowski 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.

When was this NPI record last updated?

The NPPES record for Diane Witkowski was last updated on June 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.