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DIANA C MONTOYA-WILLIAMS M.D.
NPI 1497021992
Pediatrics in Philadelphia, PA

Active since March 28, 2012PECOS Enrolled
3400 SPRUCE ST, PHILADELPHIA, PA 19104(215) 662-3228 Get Directions Write a Review

NPPES record last updated: July 12, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 12, 2018, Mar 25, 2016 (2 updates tracked since 2016).

About Diana C Montoya-williams M.d. NPPES

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

DIANA C MONTOYA-WILLIAMS M.D. (NPI 1497021992) is an individual pediatrics provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD463805) and active in the NPI registry since March 2012. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1497021992
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDIANA C MONTOYA-WILLIAMSCredential: M.D.
Location Address3400 SPRUCE STPhiladelphia, PA 19104
Mailing Address3400 Spruce StPhiladelphia, PA 19104-4238 · (215) 662-3228
Phone(215) 662-3228
Sole ProprietorNo
Enumeration DateMarch 28, 2012
Last NPPES UpdateJuly 12, 20182 updates tracked since enumeration
✔ NPI 1497021992 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in PA · MD463805
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
3400 SPRUCE ST, Philadelphia, PA 19104
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Diana C Montoya-williams 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 Reassignments

2

Medicare enrollment records show Diana Montoya-williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of Penn-Medical Group
Same address
Dermatopathology
3400 SPRUCE ST, 2 RHOADS PAVILION
Philadelphia, PA 19104
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 3,488 clinicians in this Medicare group
NPI 1073902169 (215) 662-2737
Childrens Health Care Associates, Inc
0.1 mi
Neurology
3401 CIVIC CENTER BLVD, CHILDREN'S HOSPITAL OF PHILADELPHIA
Philadelphia, PA 19104
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 1,225 clinicians in this Medicare group
NPI 1033204086 (215) 590-1000

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
$92.69 typical visit price
range $59.88 – $180.99
Typical copayment $23.17 (range $14.97 – $45.24)
Most-billed visit code 99203
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.

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.

ELIZABETH FOGLIA MD
Pediatrics
3400 SPRUCE ST, 8 RAVDIN
PHILADELPHIA, PA 19104
Philadelphia County (215) 662-3228
JOEL M STEIN MD
Radiology (Diagnostic Radiology)
3400 SPRUCE ST
PHILADELPHIA, PA 19104
Philadelphia County (215) 662-3005
PRISCILLA NELSON M.D.
Anesthesiology
3400 SPRUCE ST, 6 DULLES
PHILADELPHIA, PA 19104
Philadelphia County (215) 349-8310
DR. JASON THOMAS ACKRIVO MD
Internal Medicine (Pulmonary Disease)
3400 SPRUCE ST
PHILADELPHIA, PA 19104
Philadelphia County (215) 614-0871
JEAN-PHILIPPE RICHARD DMD
Student in an Organized Health Care Education/Training Program
3400 SPRUCE ST
PHILADELPHIA, PA 19104
Philadelphia County (215) 662-6176
LEAH M LOPEZ PA-C
Physician Assistant (Medical)
3400 SPRUCE ST, 4 SILVERSTEIN
PHILADELPHIA, PA 19104
Philadelphia County (215) 662-7870
JOANIE M GARRATT MD
Radiology (Diagnostic Radiology)
3400 SPRUCE ST
PHILADELPHIA, PA 19104
Philadelphia County (215) 662-3000
JENNIFER DEKERLEGAND
Physical Therapist
3400 SPRUCE ST, 1 WHITE BUILDING
PHILADELPHIA, PA 19104
Philadelphia County (215) 662-3265

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 Diana Montoya-williams's NPI number?

The NPI number for Diana Montoya-williams is 1497021992. It was assigned to this individual provider in the NPPES registry on March 28, 2012.

Where is Diana Montoya-williams located?

Diana Montoya-williams practices at 3400 Spruce St, Philadelphia, PA 19104. The listed phone number is (215) 662-3228.

What is Diana Montoya-williams's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Diana Montoya-williams enrolled in Medicare?

Yes. Diana Montoya-williams is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Diana Montoya-williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diana Montoya-williams reassigns Medicare benefits to 2 organizations: University Of Penn-Medical Group (Philadelphia, PA) and Childrens Health Care Associates, Inc (Philadelphia, PA). 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 Diana Montoya-williams'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 Diana Montoya-williams was last updated on July 12, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.