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ALYSSA DOMINIQUE AMMAZZALORSO MD
NPI 1861953424
Internal Medicine in Philadelphia, PA

Active since March 27, 2019PECOS EnrolledAccepts Medicare Assignment
3400 SPRUCE ST, PHILADELPHIA, PA 19104(215) 662-4000 Get Directions Write a Review

NPPES record last updated: March 6, 2024. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Alyssa Dominique Ammazzalorso Md NPPES

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

ALYSSA DOMINIQUE AMMAZZALORSO MD (NPI 1861953424) is an individual internal medicine provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD482286) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS, is affiliated with Lancaster General Hospital, and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (2019).

NPPES Registry Identity

NPI1861953424
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameALYSSA DOMINIQUE AMMAZZALORSOCredential: MD
Location Address3400 SPRUCE STPhiladelphia, PA 19104-4238
Mailing Address3400 Spruce StPhiladelphia, PA 19104-4206 · (215) 662-4000
Phone(215) 662-4000
Sole ProprietorNo
Medical School CMSAlbert Einstein College Of Medicine Of Yeshiva UniversityGraduated 2019
Enumeration DateMarch 27, 2019
Last NPPES UpdateMarch 6, 2024
NPPES CertifiedMarch 6, 2024
✔ NPI 1861953424 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 · MD482286
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
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health.Insurance ›

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

Alyssa Dominique Ammazzalorso Md 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 ID2668700287
PECOS Enrollment IDI20230926000026
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 Alyssa Ammazzalorso reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Of Penn - Medical Group
Same address
Hospitalist
3400 SPRUCE ST
Philadelphia, PA 19104
  • Reassigned Medicare billing, Pennsylvania enrollment
  • Also billed through NPI 1194832899 (Pennsylvania)
  • 752 clinicians in this Medicare group
NPI 1053447151 (215) 662-4000

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

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
107 services51 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
36 services25 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
33 services33 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
16 services15 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
12 services11 patients

Hospital Affiliations CMS Care Compare 3

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

Lancaster General Hospital

Acute Care Hospitals · Lancaster, PA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390100
Location555 North Duke StreetLancaster, PA 17602 · Lancaster County
Emergency services Birthing friendly

Hospital Of Univ Of Pennsylvania

Acute Care Hospitals · Philadelphia, PA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390111
Location34th & Spruce StsPhiladelphia, PA 19104 · Philadelphia County
Emergency services Birthing friendly

Chester County Hospital

Acute Care Hospitals · West Chester, PA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390179
Location701 East Marshall StreetWest Chester, PA 19380 · Chester County
Emergency services Birthing friendly

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 Alyssa Ammazzalorso's NPI number?

The NPI number for Alyssa Ammazzalorso is 1861953424. It was assigned to this individual provider in the NPPES registry on March 27, 2019.

Where is Alyssa Ammazzalorso located?

Alyssa Ammazzalorso practices at 3400 Spruce St, Philadelphia, PA 19104. The listed phone number is (215) 662-4000.

What is Alyssa Ammazzalorso's specialty?

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

Is Alyssa Ammazzalorso enrolled in Medicare?

Yes. Alyssa Ammazzalorso 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 Alyssa Ammazzalorso's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alyssa Ammazzalorso 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 Alyssa Ammazzalorso's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alyssa Ammazzalorso accept?

Health plans from Ambetter Health and Ambetter from Buckeye Health Plan list Alyssa Ammazzalorso as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Alyssa Ammazzalorso affiliated with any hospitals?

According to CMS data, Alyssa Ammazzalorso is affiliated with Lancaster General Hospital, Hospital Of Univ Of Pennsylvania and Chester County Hospital.

When was this NPI record last updated?

The NPPES record for Alyssa Ammazzalorso was last updated on March 6, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.