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DR. KATHLEEN C DILLER MD
NPI 1679729545
Psychiatry & Neurology - Neurology in Philadelphia, PA

Active since August 12, 2008PECOS Enrolled
85.48/100
CMS Quality Rating
3535 MARKET ST., 3RD FLOOR, PHILADELPHIA, PA 19104(215) 746-6700(215) 746-5155 Get Directions Write a Review

NPPES record last updated: March 10, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Kathleen C Diller Md NPPES

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

DR. KATHLEEN C DILLER MD (NPI 1679729545) is an individual neurology provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD439734) and active in the NPI registry since August 2008. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1679729545
Entity TypeIndividualFemale
Primary Taxonomy2084N0400X
Provider Legal NameDR. KATHLEEN C DILLERCredential: MD
Location Address3535 MARKET ST., 3RD FLOORPhiladelphia, PA 19104-3309
Mailing Address3535 Market St., 3rd FloorPhiladelphia, PA 19104-3309 · (215) 746-6700 · Fax (215) 746-5155
Phone(215) 746-6700
Fax(215) 746-5155
Sole ProprietorNo
Enumeration DateAugust 12, 2008
Last NPPES UpdateMarch 10, 2026
NPPES CertifiedMarch 10, 2026
✔ NPI 1679729545 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License✔ Licensed in PA · MD439734
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
Also ListedPsychiatry & Neurology · PsychiatryTaxonomy 2084P0800X · License MD439734 (PA), 186531 (PA)
3535 MARKET ST., Philadelphia, PA 19104
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Kathleen C Diller Md 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 Kathleen Diller reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Of Penn-Medical Group
Same address
Psychiatry
3535 MARKET ST, 3RD FLOOR
Philadelphia, PA 19104
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 3,488 clinicians in this Medicare group
NPI 1821486846 (215) 746-6700

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19104 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
$137.17 typical visit price
range $59.88 – $180.99
Typical copayment $34.29 (range $14.97 – $45.24)
Most-billed visit code 99204
Established Patient
$105.21 typical visit price
range $19.30 – $147.29
Typical copayment $26.30 (range $4.82 – $36.82)
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.

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.

85.48/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality73.6
Promoting Interoperability100
Improvement Activities40

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.

LINDSAY BODEN SORTOR PSYD
Psychologist
3535 MARKET ST., 3RD FLOOR
PHILADELPHIA, PA 19104
Philadelphia County (215) 746-6700
DR. BRADLEY MICHAEL ROSENFIELD PSY.D.
Psychologist (Cognitive & Behavioral)
3535 MARKET ST., CENTER FOR COGNITIVE THERAPY, UPENN
PHILA., PA 19104
Philadelphia County (215) 898-4100
HEATHER NICOLE ZUKIN MSS
Social Worker (Clinical)
3535 MARKET ST., 2ND FL.
PHILADELPHIA, PA 19104
Philadelphia County (215) 746-6701
DANIEL WEINTRAUB MD
Psychiatry & Neurology (Psychiatry)
3535 MARKET ST., 3RD FLOOR
PHILADELPHIA, PA 19104
Philadelphia County (215) 746-6700
JESSICA RAE MONTGOMERY LMHC, LPC
Counselor (Mental Health)
3535 MARKET ST., 2ND FL.
PHILADELPHIA, PA 19104
Philadelphia County (317) 494-2460
THEODORE D SATTERTHWAITE MD
Psychiatry & Neurology (Psychiatry)
3535 MARKET ST., 3RD FLOOR
PHILADELPHIA, PA 19104
Philadelphia County (215) 746-6700

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 Kathleen Diller's NPI number?

The NPI number for Kathleen Diller is 1679729545. It was assigned to this individual provider in the NPPES registry on August 12, 2008.

Where is Kathleen Diller located?

Kathleen Diller practices at 3535 Market St. 3rd Floor, Philadelphia, PA 19104. The listed phone number is (215) 746-6700.

What is Kathleen Diller's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Kathleen Diller enrolled in Medicare?

Yes. Kathleen Diller is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Kathleen Diller's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kathleen Diller reassigns Medicare benefits to University Of Penn-Medical Group (Philadelphia, PA). 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 Kathleen Diller'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 Kathleen Diller was last updated on March 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.