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MS. STEFANIE LAUREN EHRLEIN AGPCNP-BC, RN
NPI 1639758923
Nurse Practitioner - Adult Health in Mount Sinai, NY

Active since April 05, 2021PECOS EnrolledAccepts Medicare Assignment
76.52/100
CMS Quality Rating
5499 NESCONSET HWY, MOUNT SINAI, NY 11766(631) 928-2600 Get Directions Write a Review

NPPES record last updated: May 7, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 7, 2021, Apr 5, 2021 (2 updates tracked since 2021).

About Ms. Stefanie Lauren Ehrlein Agpcnp-bc, Rn NPPES

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

MS. STEFANIE LAUREN EHRLEIN AGPCNP-BC, RN (NPI 1639758923) is an individual adult health provider in Mount Sinai, New York, licensed in New York (309719) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS, is affiliated with Long Island Community Hospital, and maintains a secondary practice location in Selden.

NPPES Registry Identity

NPI1639758923
Entity TypeIndividualFemale
Primary Taxonomy363LA2200X
Provider Legal NameMS. STEFANIE LAUREN EHRLEINCredential: AGPCNP-BC, RN
Location Address5499 NESCONSET HWYMount Sinai, NY 11766-2063
Mailing Address5499 Nesconset HwyMount Sinai, NY 11766-2063 · (631) 928-2600
Phone(631) 928-2600
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateApril 5, 2021
Last NPPES UpdateMay 7, 20212 updates tracked since enumeration
NPPES CertifiedApril 11, 2021
✔ NPI 1639758923 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Adult HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2200X
License✔ Licensed in NY · 309719
Also ListedRegistered NurseTaxonomy 163W00000X · License 558789 (NY)
5499 NESCONSET HWY, Mount Sinai, NY 11766
Open in Google Maps ↗

Secondary Practice Location 1

Location 1243 Boyle RdSelden, NY 11784-1929 · Phone (631) 696-2000

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

Ms. Stefanie Lauren Ehrlein Agpcnp-bc, Rn 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 ID4284043340
PECOS Enrollment IDI20210503001333
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

3

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

City Medical Of Upper East Side, PLLC
1.5 mi
Urgent Care
4724 NESCONSET HWY
Port Jefferson Station, NY 11776
  • Reassigned Medicare billing, New York enrollment
  • 596 clinicians in this Medicare group
NPI 1346743747 (631) 474-5900
North Shore Hematology Oncology Associates PC
1.8 mi
Specialist
49 NESCONSET HWY
Port Jefferson Station, NY 11776
  • Reassigned Medicare billing, New York enrollment
  • 636 clinicians in this Medicare group
NPI 1396794574 (631) 751-3000
Michael Bishai MD, LLC
11 mi
Internal Medicine
50 ROUTE 25A
Smithtown, NY 11787
  • Reassigned Medicare billing, New York enrollment
  • 11 clinicians in this Medicare group
NPI 1730609827 (516) 550-9865

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 9

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.

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.
314 services130 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
72 services55 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
53 services37 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
43 services43 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
24 services24 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
21 services21 patients

Hospital Affiliations CMS Care Compare

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

Long Island Community Hospital

Acute Care Hospitals · Patchogue, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330141
Location101 Hospital RoadPatchogue, NY 11772 · Suffolk County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11766 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
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

76.52/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality64.02
Promoting Interoperability100
Improvement Activities40
Cost57.73

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
7 suppliers14 claims42 services$5.40 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 3

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

DR. KOMAL KHIANI MD
Internal Medicine
5499 NESCONSET HWY
MOUNT SINAI, NY 11766
Suffolk County (631) 538-8800
JESSICA WESLEY PT
Physical Therapist
5499 NESCONSET HWY
MOUNT SINAI, NY 11766
Suffolk County (631) 331-3910
KAREN LINEHAN PT
Physical Therapist
5499 NESCONSET HWY
MOUNT SINAI, NY 11766
Suffolk County (631) 331-3910

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 Stefanie Ehrlein's NPI number?

The NPI number for Stefanie Ehrlein is 1639758923. It was assigned to this individual provider in the NPPES registry on April 5, 2021.

Where is Stefanie Ehrlein located?

Stefanie Ehrlein practices at 5499 Nesconset Hwy, Mount Sinai, NY 11766. The listed phone number is (631) 928-2600.

What is Stefanie Ehrlein's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.

Is Stefanie Ehrlein enrolled in Medicare?

Yes. Stefanie Ehrlein 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 organizations bill Medicare for Stefanie Ehrlein's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stefanie Ehrlein reassigns Medicare benefits to 3 organizations: City Medical Of Upper East Side, PLLC (Port Jefferson Station, NY), North Shore Hematology Oncology Associates PC (Port Jefferson Station, NY) and Michael Bishai MD, LLC (Smithtown, NY). 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 Stefanie Ehrlein's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Stefanie Ehrlein affiliated with any hospitals?

According to CMS data, Stefanie Ehrlein is affiliated with Long Island Community Hospital.

When was this NPI record last updated?

The NPPES record for Stefanie Ehrlein was last updated on May 7, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.