DR. ALEXANDRA JOY ERHARDT DO
NPI 1861853343
Transplant Surgery in Hackensack, NJ

NPI Status: Active since March 11, 2016

Contact Information

20 PROSPECT AVE
STE 406
HACKENSACK, NJ
ZIP 07601
Phone: (551) 996-2959

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  • Individual
  • Female
  • Years of Experience 10
  • Transplant Surgery
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About ALEXANDRA ERHARDT

This page provides the complete NPI Profile along with additional information for Alexandra Erhardt, a provider established in Hackensack, New Jersey with a medical specialization in Transplant Surgery and more than 10 years of experience. The healthcare provider is registered in the NPI registry with number 1861853343 assigned on March 2016. The practitioner's primary taxonomy code is 204F00000X with license number 25MB11946000 (NJ). The provider is registered as an individual and her NPI record was last updated May 2026.

NPI
1861853343
Provider Name
DR. ALEXANDRA JOY ERHARDT DO
Gender
Female
Entity Type
Individual
Location Address
20 PROSPECT AVE STE 406 HACKENSACK, NJ 07601
Location Phone
(551) 996-2959
Mailing Address
331 NEWMAN SPRINGS RD BLDG 2, STE 220 RED BANK, NJ 07701
Medical School Name
OTHER
Graduation Year
2016
Is Sole Proprietor?
No
Enumeration Date
03-11-2016
Last Update Date
05-22-2026
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Location Map

Secondary Locations

  • 7600 River Rd
    North Bergen, NJ 07047
    (201) 710-2753

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Transplant Surgery

Taxonomy Code
204F00000X
Type
Allopathic & Osteopathic Physicians
License No.
25MB11946000
License State
NJ
Taxonomy Description
A surgeon who specializes in transplant surgery. Source: National Uniform Claim Committee

Medicare Participation & PECOS Enrollment Status

Alexandra Erhardt is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Alexandra Erhardt is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 5597169631

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20230901000465

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more

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.

This service was performed 123 times for 76 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes

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.

This service was performed 25 times for 21 patients

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

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.

This service was performed 49 times for 38 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

This service was performed 14 times for 14 patients

Preparation of donor kidney and ureter for transplantation

The preparation for a kidney transplant involves thoroughly examining the donor kidney and ureter. They are carefully preserved and cooled to slow down their metabolic rate. This helps maintain their function until they are transplanted into the recipient's body.

This service was performed 30 times for 30 patients

Preparation of donor kidney and veins for transplantation

In kidney transplantation, a healthy kidney is taken from a donor. The kidney is carefully prepared, cleaned, and preserved. Veins are also prepared to ensure smooth blood flow to the new kidney. This process is done under strict medical protocols.

This service was performed 17 times for 17 patients

Preparation of donor kidney for transplantation

Preparation of a kidney for transplantation involves careful evaluation of the donor organ. It includes checking for diseases, ensuring compatibility, and preserving the organ in a cold solution until transplantation. This process ensures the best outcome for the recipient.

This service was performed 35 times for 35 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes

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.

This service was performed 79 times for 36 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes

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.

This service was performed 49 times for 23 patients

Transplantation of donor kidney

Transplantation of a donor kidney involves replacing a non-functioning kidney with a healthy one from a donor. This procedure can significantly improve the quality of life for those with serious kidney disease. The new kidney can perform the essential task of filtering blood and removing waste.

This service was performed 34 times for 34 patients

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Alexandra Erhardt is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
HACKENSACK UNIVERSITY MEDICAL CENTER30 PROSPECT AVE
HACKENSACK, NJ 07601
(551) 996-2000Acute Care Hospitals
JERSEY SHORE UNIVERSITY MEDICAL CENTER1945 STATE ROUTE 33
NEPTUNE, NJ 07753
(732) 775-5500Acute Care Hospitals

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1861853343, we treat the final digit (3) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 67. The final step is to find the difference between that total and the next multiple of ten (70 - 67 = 3).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
8
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
1
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
5
Unchanged
Pos 7
3
Doubled → 6
Pos 8
3
Unchanged
Pos 9
4
Doubled → 8
Check
3
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 6 → 12 → 3 8 → 16 → 7 3 → 6 4 → 8

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 8 + 1 + 2 + 1 + 1 + 6 + 5 + 6 + 3 + 8 + 24 = 67

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 67 is 70. The difference is the calculated check digit.

70 - 67 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1861853343.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Specialist
20 PROSPECT AVE, STE 600
HACKENSACK, NJ 07601
Internal Medicine (Clinical Cardiac Electrophysiology)
20 PROSPECT AVE, SUITE 701
HACKENSACK, NJ 07601
Internal Medicine (Clinical Cardiac Electrophysiology)
20 PROSPECT AVE, STE 701
HACKENSACK, NJ 07601
Internal Medicine (Clinical Cardiac Electrophysiology)
20 PROSPECT AVE, STE 701
HACKENSACK, NJ 07601
Internal Medicine (Infectious Disease)
20 PROSPECT AVE, SUITE 507
HACKENSACK, NJ 07601
Internal Medicine (Infectious Disease)
20 PROSPECT AVE, SUITE 507
HACKENSACK, NJ 07601
Obstetrics & Gynecology (Obstetrics)
20 PROSPECT AVE, SUITE 705
HACKENSACK, NJ 07601
Obstetrics & Gynecology
20 PROSPECT AVE, SUITE 607
HACKENSACK, NJ 07601
Obstetrics & Gynecology
20 PROSPECT AVE, SUITE 810
HACKENSACK, NJ 07601
Obstetrics & Gynecology
20 PROSPECT AVE, SUITE # 810
HACKENSACK, NJ 07601
Specialist
20 PROSPECT AVE, SUITE 719
HACKENSACK, NJ 07601
Physician Assistant
20 PROSPECT AVE, SUITE 912
HACKENSACK, NJ 07601
Plastic Surgery
20 PROSPECT AVE, SUITE 501
HACKENSACK, NJ 07601
Obstetrics & Gynecology
20 PROSPECT AVE, SUITE # 810
HACKENSACK, NJ 07601
Obstetrics & Gynecology
20 PROSPECT AVE, STE 601
HACKENSACK, NJ 07601
Internal Medicine (Infectious Disease)
20 PROSPECT AVE, SUITE 507
HACKENSACK, NJ 07601
Thoracic Surgery (Cardiothoracic Vascular Surgery)
20 PROSPECT AVE, SUITE 900
HACKENSACK, NJ 07601
Nurse Practitioner (Acute Care)
20 PROSPECT AVE
HACKENSACK, NJ 07601
Surgery
20 PROSPECT AVE
HACKENSACK, NJ 07601
Surgery (Surgical Oncology)
20 PROSPECT AVE, SUITE 603
HACKENSACK, NJ 07601

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1861853343, enumerated as an "individual" on March 11, 2016.

The provider is located at 20 PROSPECT AVE STE 406 HACKENSACK, NJ 07601 and the phone number is (551) 996-2959.

Transplant Surgery with taxonomy code 204F00000X.

Alexandra Erhardt is affiliated with: HACKENSACK UNIVERSITY MEDICAL CENTER and JERSEY SHORE UNIVERSITY MEDICAL CENTER.