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DR. WILLIAM HUNTER HEWLETT MD
NPI 1902553365
Internal Medicine in Philadelphia, PA

Active since March 06, 2022PECOS Enrolled
3400 SPRUCE ST, PHILADELPHIA, PA 19104(215) 823-4133 Get Directions Write a Review

NPPES record last updated: April 28, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 28, 2026, Jun 11, 2023, Mar 26, 2023 and 1 more (4 updates tracked since 2022).

About Dr. William Hunter Hewlett Md NPPES

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

DR. WILLIAM HUNTER HEWLETT MD (NPI 1902553365) is an individual internal medicine provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD492633) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1902553365
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. WILLIAM HUNTER HEWLETTCredential: MD
Location Address3400 SPRUCE STPhiladelphia, PA 19104-4238
Mailing Address3400 Spruce StPhiladelphia, PA 19104-4238
Phone(215) 823-4133
Sole ProprietorYes
Medical School CMSOtherGraduated 2023
Enumeration DateMarch 6, 2022
Last NPPES UpdateApril 28, 20264 updates tracked since enumeration
NPPES CertifiedApril 28, 2026
✔ NPI 1902553365 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in PA · MD492633
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.
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)

Dr. William Hunter Hewlett Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8628595659
PECOS Enrollment IDI20260602001879
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 William Hewlett 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
Hospitalist
3400 SPRUCE ST
Philadelphia, PA 19104
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 752 clinicians in this Medicare group
NPI 1053447151 (215) 662-4000
Trustees Of The University Of Pennsylvania
0.5 mi
Internal Medicine
51 N 39TH ST
Philadelphia, PA 19104
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 199 clinicians in this Medicare group
NPI 1124882949 (215) 662-8000

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.

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 William Hewlett's NPI number?

The NPI number for William Hewlett is 1902553365. It was assigned to this individual provider in the NPPES registry on March 6, 2022.

Where is William Hewlett located?

William Hewlett practices at 3400 Spruce St, Philadelphia, PA 19104. The listed phone number is (215) 823-4133.

What is William Hewlett's specialty?

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

Is William Hewlett enrolled in Medicare?

Yes. William Hewlett is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for William Hewlett's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Hewlett reassigns Medicare benefits to 2 organizations: University Of Penn - Medical Group (Philadelphia, PA) and Trustees Of The University Of Pennsylvania (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 William Hewlett'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 William Hewlett was last updated on April 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.