DR. ALEXANDRA NATALIE ASCHER MD
NPI 1942528724
Internal Medicine in Brooklyn, NY

Q: What is Alexandra Ascher's NPI number?

The NPI number for Alexandra Ascher is 1942528724. It was assigned to this individual provider in the NPPES registry on May 4, 2010. The provider is also known as Dr. Natalie Alexandra Marks MD.

Q: What is Alexandra Ascher'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 Alexandra Ascher was last updated on March 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.

Active since May 04, 2010PECOS EnrolledAccepts Medicare Assignment

98.67/100

CMS Quality Rating

960 50TH ST, BROOKLYN, NY 11219(718) 438-3800(718) 438-3131 Get Directions Write a Review

NPPES record last updated: March 3, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 3, 2026, Oct 4, 2021 (2 updates tracked since 2021).

On this page

About Dr. Alexandra Natalie Ascher Md NPPES

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

DR. ALEXANDRA NATALIE ASCHER MD (NPI 1942528724) is an individual internal medicine provider in Brooklyn, New York, licensed in New York (271164) and active in the NPI registry since May 2010. She is enrolled in Medicare PECOS and is a graduate of Other (1993).

NPPES Registry Identity

NPI1942528724

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameDR. ALEXANDRA NATALIE ASCHERCredential: MD

Location Address960 50TH STBrooklyn, NY 11219-3399

Mailing Address960 50th StBrooklyn, NY 11219-3399 · (718) 438-3800 · Fax (718) 438-3131

Phone(718) 438-3800

Fax(718) 438-3131

Sole ProprietorYes

Medical School CMSOtherGraduated 1993

Enumeration DateMay 4, 2010

Last NPPES UpdateMarch 3, 20262 updates tracked since enumeration

NPPES CertifiedMarch 3, 2026

✔ NPI 1942528724 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in NY · 271164

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.

960 50TH ST, Brooklyn, NY 11219

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Other Names 1

Former Name (1)Dr. Natalie Alexandra Marks Md

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

Dr. Alexandra Natalie Ascher 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 ID2860634722

PECOS Enrollment IDI20130806000713

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 Alexandra Ascher reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Total Vascular Care PLLC

Same address

Vascular Surgery

960 50TH ST
Brooklyn, NY 11219

Reassigned Medicare billing, New York enrollment
5 clinicians in this Medicare group

NPI 1912275215 (718) 438-3800

Maimonides Faculty Practice Plan

0.1 mi

Internal Medicine

4802 10TH AVE
Brooklyn, NY 11219

Reassigned Medicare billing, New York enrollment
1,177 clinicians in this Medicare group

NPI 1053344846 (718) 283-8700

Maimonides Medical Center - Mmc Division Of Geriatric Medicine Fpp

0.1 mi

Geriatric Medicine

4802 10TH AVE
Brooklyn, NY 11219

Reassigned Medicare billing, New York enrollment
12 clinicians in this Medicare group

NPI 1831203132 (718) 283-8773

Nyu Langone Hospitals

1.2 mi

Multi-Specialty

150 55TH ST
Brooklyn, NY 11220

Reassigned Medicare billing, New York enrollment
616 clinicians in this Medicare group

NPI 1831549559 (718) 630-7000

New York University

1,032 mi

Cardiovascular Disease

3301 QUANTUM BLVD
Boynton Beach, FL 33426

Reassigned Medicare billing, New York enrollment
7,712 clinicians in this Medicare group

NPI 1285826438 (877) 648-2964

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 14

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 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.

448 services278 patients

Strapping, unna boot 29580

An Unna Boot is a special bandage, soaked in a gel, wrapped around your lower leg and foot. It helps heal leg sores, improve circulation, and reduce swelling. The boot hardens and provides compression, promoting healing and comfort.

337 services82 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

87 services87 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.

86 services50 patients

Injection of chemical agent into single incompetent vein of leg using ultrasound guidance 36465

This procedure involves injecting a chemical agent into a non-functioning vein in your leg. Ultrasound technology is used to accurately locate the vein. The chemical helps to close off the vein, rerouting blood flow to healthier veins.

73 services44 patients

Injection of chemical agent into multiple incompetent veins of leg 36471

This procedure involves injecting a special chemical into problematic veins in the leg. The chemical helps to close off these veins, rerouting blood through healthier veins. This can alleviate discomfort and improve the appearance of the treated area.

59 services21 patients

Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts 93978

This procedure involves using sound waves to create images of your aorta, vena cava, groin vessels, or bypass grafts. It helps to detect abnormalities or blockages, ensuring your blood flows smoothly. It's painless and non-invasive.

54 services52 patients

Ultrasound study of arm or leg veins with compression and maneuvers 93970

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

50 services48 patients

Injection of chemical agent into multiple incompetent veins of same leg using ultrasound guidance 36466

This procedure involves injecting a special chemical into problematic veins in your leg, using ultrasound technology to accurately target the veins. This helps to reduce issues like pain and swelling by improving blood flow in the leg.

44 services33 patients

Ultrasonic guidance for needle placement 76942

Ultrasonic guidance for needle placement is a technique where sound waves create images that help accurately position the needle during procedures. This method ensures precision, minimizes discomfort, and increases safety.

39 services18 patients

Ultrasound of leg arteries or artery grafts 93925

An ultrasound of leg arteries or artery grafts is a non-invasive imaging test. It uses high-frequency sound waves to capture live images from inside your body, specifically your leg arteries or grafts. This helps in detecting any blockages or abnormalities.

19 services17 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

17 services15 patients

Complete ultrasound study of arm and leg arteries 93923

This procedure involves using sound waves to produce images of your arm and leg arteries. It helps identify blockages or abnormalities that could lead to conditions like stroke or peripheral artery disease. It's non-invasive and painless.

14 services12 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 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11219 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

$154.28 typical visit price

range $67.40 – $203.53

Typical copayment $38.57 (range $16.85 – $50.88)

Most-billed visit code 99204

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.

98.67/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

86.67

Promoting Interoperability

Improvement Activities

Cost

76.41

Reported Quality Measures

Controlling High Blood Pressure

61%379 patients3/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

98%1,852 patients4/55-star benchmark: 100%

e-Prescribing

86%42 patients1/55-star benchmark: 100%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

79%950 patients4/55-star benchmark: 98%

Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented

92%1,849 patients5/55-star benchmark: 61%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Patients combinedPopulations: 100% · 292 patients

Patients screened: 100% · 292 patients

96%24 patients4/55-star benchmark: 100%

Provide Patients Electronic Access to Their Health Information

99%324 patients4/55-star benchmark: 100%

Use of High-Risk Medications in Older Adults

Lower rates are better for this measure.

Patients appropriateDiagnosis: 0% · 543 patients

Patients totalRate: 2% · 543 patients

1%543 patients4/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 2

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

Pneumatic compressor, segmental home model without calibrated gradient pressure E0651

DME-Other DME · category DE000N

1 supplier14 claims14 services$752.60 avg. paid by Medicare

Segmental pneumatic appliance for use with pneumatic compressor, full leg E0667

DME-Other DME · category DE000N

1 supplier14 claims28 services$312.14 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 4

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

SAREH RAJAEE SAREH RAJAEE

Surgery (Vascular Surgery)

960 50TH ST
BROOKLYN, NY 11219

Kings County (718) 438-3800

ENRICO ASCHER MD

Surgery (Vascular Surgery)

960 50TH ST
BROOKLYN, NY 11219

Kings County (718) 438-3800

ANIL HINGORANI MD

Surgery (Vascular Surgery)

960 50TH ST
BROOKLYN, NY 11219

Kings County (718) 438-3800

TOTAL VASCULAR CARE PLLC

Surgery (Vascular Surgery)

960 50TH ST
BROOKLYN, NY 11219

Kings County (718) 438-3800

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 Alexandra Ascher's NPI number?

The NPI number for Alexandra Ascher is 1942528724. It was assigned to this individual provider in the NPPES registry on May 4, 2010. The provider is also known as Dr. Natalie Alexandra Marks MD.

Where is Alexandra Ascher located?

Alexandra Ascher practices at 960 50th St, Brooklyn, NY 11219. The listed phone number is (718) 438-3800.

What is Alexandra Ascher's specialty?

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

Is Alexandra Ascher enrolled in Medicare?

Yes. Alexandra Ascher 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 Alexandra Ascher's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexandra Ascher reassigns Medicare benefits to 5 organizations: Total Vascular Care PLLC (Brooklyn, NY), Maimonides Faculty Practice Plan (Brooklyn, NY), Maimonides Medical Center - Mmc Division Of Geriatric Medicine Fpp (Brooklyn, NY), Nyu Langone Hospitals (Brooklyn, NY) and New York University (Boynton Beach, FL). 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 Alexandra Ascher's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Alexandra Ascher was last updated on March 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.