MAXWELL ISAAC DO
NPI 1851918346
Internal Medicine in Philadelphia, PA

Q: What is Maxwell Isaac's NPI number?

The NPI number for Maxwell Isaac is 1851918346. It was assigned to this individual provider in the NPPES registry on June 30, 2020.

Q: What is Maxwell Isaac's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Maxwell Isaac was last updated on June 29, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since June 30, 2020PECOS EnrolledAccepts Medicare Assignment

1020 WALNUT ST, PHILADELPHIA, PA 19107(573) 884-1606 Get Directions Write a Review

NPPES record last updated: June 29, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Maxwell Isaac Do NPPES

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

MAXWELL ISAAC DO (NPI 1851918346) is an individual internal medicine provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (OS022944) and active in the NPI registry since June 2020. He is enrolled in Medicare PECOS, is affiliated with Thomas Jefferson University Hospital, and is a graduate of William Carey University College Of Osteopathic Medicine (2020).

NPPES Registry Identity

NPI1851918346

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameMAXWELL ISAACCredential: DO

Location Address1020 WALNUT STPhiladelphia, PA 19107-5567

Mailing Address1020 Walnut StPhiladelphia, PA 19107-5567

Phone(573) 884-1606

Sole ProprietorNo

Medical School CMSWilliam Carey University College Of Osteopathic MedicineGraduated 2020

Enumeration DateJune 30, 2020

Last NPPES UpdateJune 29, 2023

NPPES CertifiedJune 29, 2023

✔ NPI 1851918346 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Licenses✔ Licensed in PA · OS022944✔ Licensed in MO · 2020019336

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.

1020 WALNUT ST, Philadelphia, PA 19107

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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 and accepts Medicare assignment

Maxwell Isaac Do 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 ID4385067057

PECOS Enrollment IDI20230726002666

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

Medicare enrollment records show Maxwell Isaac reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Jefferson University Physicians

0.2 mi

General Practice

33 S. 9TH STREET
Philadelphia, PA 19107

Reassigned Medicare billing, Pennsylvania enrollment
1,739 clinicians in this Medicare group

NPI 1326093675 (215) 955-0000

Methodist Associates In Healthcare, Inc

0.7 mi

Physical Medicine & Rehabilitation

1513 RACE ST
Philadelphia, PA 19102

Reassigned Medicare billing, Pennsylvania enrollment
600 clinicians in this Medicare group

NPI 1508516451 (215) 587-3406

Main Line Healthcare

14 mi

Family Medicine

3803 WEST CHESTER PIKE, H BLDG SUITE 160
Newtown Square, PA 19073

Reassigned Medicare billing, Pennsylvania enrollment
1,638 clinicians in this Medicare group

NPI 1922077643 (484) 337-1585

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 3

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.

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.

57 services57 patients

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.

46 services27 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

12 services12 patients

Hospital Affiliations CMS Care Compare 2

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

Thomas Jefferson University Hospital

Acute Care Hospitals · Philadelphia, PA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390174

Location111 South 11th StreetPhiladelphia, PA 19107 · Philadelphia 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 19107 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 7

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

RACHEL RIVERA MD

Student in an Organized Health Care Education/Training Program