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JULIANNA LESLEY TANTUM
NPI 1437786159
Internal Medicine - Gastroenterology in Bryn Mawr, PA

Active since March 24, 2020PECOS EnrolledAccepts Medicare Assignment
825 OLD LANCASTER RD STE 340, BRYN MAWR, PA 19010(610) 525-9570(610) 527-8805 Get Directions Write a Review

NPPES record last updated: July 24, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 24, 2026, Mar 24, 2020 (2 updates tracked since 2020).

About Julianna Lesley Tantum NPPES

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

JULIANNA LESLEY TANTUM (NPI 1437786159) is an individual gastroenterology provider in Bryn Mawr, Pennsylvania, licensed in Pennsylvania (OS023498) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS, is affiliated with Bryn Mawr Hospital, and maintains a secondary practice location in Wynnewood.

NPPES Registry Identity

NPI1437786159
Entity TypeIndividualFemale
Primary Taxonomy207RG0100X
Provider Legal NameJULIANNA LESLEY TANTUM
Location Address825 OLD LANCASTER RD STE 340Bryn Mawr, PA 19010-3235
Mailing Address825 Old Lancaster Rd Ste 320Bryn Mawr, PA 19010-3235 · (610) 527-3800 · Fax (610) 527-0334
Phone(610) 525-9570
Fax(610) 527-8805
Sole ProprietorNo
Medical School CMSPhiladelphia College Of Osteopathic MedicineGraduated 2020
Enumeration DateMarch 24, 2020
Last NPPES UpdateJuly 24, 20262 updates tracked since enumeration
NPPES CertifiedJuly 24, 2026
✔ NPI 1437786159 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in PA · OS023498
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
825 OLD LANCASTER RD STE 340, Bryn Mawr, PA 19010
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Secondary Practice Location 1

Location 1100 E Lancaster AveWynnewood, PA 19096-3450 · Phone (484) 476-2000

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

Julianna Lesley Tantum 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 ID4880018217
PECOS Enrollment IDI20260716000520
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 Julianna Tantum reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Bryn Mawr Medical Specialists Association
Same address
Multi-Specialty
825 OLD LANCASTER RD, SUITE 320
Bryn Mawr, PA 19010
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 171 clinicians in this Medicare group
NPI 1841226099 (610) 527-3800

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

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Bryn Mawr Hospital

Acute Care Hospitals · Bryn Mawr, PA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390139
Location130 South Bryn Mawr AveBryn Mawr, PA 19010 · Montgomery County
Emergency services Birthing friendly

Main Line Hospital Lankenau

Acute Care Hospitals · Wynnewood, PA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390195
Location100 Lancaster AveWynnewood, PA 19096 · Montgomery County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19010 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 6

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

DR. NIKHITA DHARBHAMULLA M.D.
Internal Medicine (Gastroenterology)
825 OLD LANCASTER RD STE 340
BRYN MAWR, PA 19010
Delaware County (610) 525-9570
WILLIAM HABERSTROH D.O.
Internal Medicine (Gastroenterology)
825 OLD LANCASTER RD STE 340
BRYN MAWR, PA 19010
Delaware County (610) 527-9570
NICOLE COSTA CRNP
Nurse Practitioner (Family)
825 OLD LANCASTER RD STE 340
BRYN MAWR, PA 19010
Delaware County (610) 525-9570
KAITLYN MOLLIE FINE PA
Physician Assistant
825 OLD LANCASTER RD STE 340
BRYN MAWR, PA 19010
Delaware County (610) 525-9570
RACHEL LAUREN BARNET PA-C
Physician Assistant
825 OLD LANCASTER RD STE 340
BRYN MAWR, PA 19010
Delaware County (610) 525-9570
DANIEL WEINBLATT DO
Internal Medicine (Gastroenterology)
825 OLD LANCASTER RD STE 340
BRYN MAWR, PA 19010
Delaware County (610) 525-9570

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 Julianna Tantum's NPI number?

The NPI number for Julianna Tantum is 1437786159. It was assigned to this individual provider in the NPPES registry on March 24, 2020.

Where is Julianna Tantum located?

Julianna Tantum practices at 825 Old Lancaster Rd Ste 340, Bryn Mawr, PA 19010. The listed phone number is (610) 525-9570.

What is Julianna Tantum's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Julianna Tantum enrolled in Medicare?

Yes. Julianna Tantum 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 organization bills Medicare for Julianna Tantum's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Julianna Tantum reassigns Medicare benefits to Bryn Mawr Medical Specialists Association (Bryn Mawr, 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 Julianna Tantum's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Julianna Tantum affiliated with any hospitals?

According to CMS data, Julianna Tantum is affiliated with Bryn Mawr Hospital and Main Line Hospital Lankenau.

When was this NPI record last updated?

The NPPES record for Julianna Tantum was last updated on July 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.