Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. ADA M WINKIELMAN MD
NPI 1992798870
Dermatology - Dermatopathology in Tarzana, CA

Q: What is Ada Winkielman's NPI number?

The NPI number for Ada Winkielman is 1992798870. It was assigned to this individual provider in the NPPES registry on August 25, 2005.

Q: What is Ada Winkielman's specialty?

The primary specialty registered for this NPI is Dermatology, specializing in Dermatopathology, with taxonomy code 207ND0900X.

Q: When was this NPI record last updated?

The NPPES record for Ada Winkielman was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since August 25, 2005PECOS Enrolled

0/100

CMS Quality Rating

18364 CLARK ST, TARZANA, CA 91356(818) 345-7122(818) 345-7448 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. Ada M Winkielman Md NPPES

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

DR. ADA M WINKIELMAN MD (NPI 1992798870) is an individual dermatopathology provider in Tarzana, California, licensed in California (A81078) and active in the NPI registry since August 2005. She is enrolled in Medicare PECOS and is a graduate of Other (1990).

NPPES Registry Identity

NPI1992798870

Entity TypeIndividualFemale

Primary Taxonomy207ND0900X

Provider Legal NameDR. ADA M WINKIELMANCredential: MD

Location Address18364 CLARK STTarzana, CA 91356-3502

Mailing Address18364 Clark StTarzana, CA 91356-3502 · (818) 345-7122 · Fax (818) 345-7448

Phone(818) 345-7122

Fax(818) 345-7448

Sole ProprietorNo

Medical School CMSOtherGraduated 1990

Enumeration DateAugust 25, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1992798870 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDermatology · DermatopathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ND0900X

License✔ Licensed in CA · A81078

Definition

A dermatopathologist has the expertise to diagnose and monitor diseases of the skin including infectious, immunologic, degenerative and neoplastic diseases. This entails the examination and interpretation of specially prepared tissue sections, cellular scrapings and smears of skin lesions by means of routine and special (electron and fluorescent) microscopes.

18364 CLARK ST, Tarzana, CA 91356

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ada M Winkielman 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 ID345201745

PECOS Enrollment IDI20041019001421

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.

Areas of Expertise CMS Part B claims 13

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.

Destruction of precancer skin growth, 2-14 growths 17003

This procedure involves removing 2-14 precancerous skin growths. The growths are treated to prevent them from potentially developing into skin cancer. The process is safe, with minimal discomfort, and promotes healthier skin.

462 services63 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.

418 services214 patients

Pathology examination of tissue using a microscope, intermediate complexity 88305

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

248 services111 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.

163 services139 patients

Destruction of skin growth, 1-14 growths 17110

"Destruction of skin growth" refers to a procedure where 1-14 abnormal skin growths are removed. This is done using methods such as freezing, burning, or laser therapy. It helps prevent the growth from causing discomfort or turning into a more serious condition.

154 services123 patients

Destruction of precancer skin growth, 1 growth 17000

"Destruction of precancer skin growth" is a procedure that eliminates a single precancerous skin growth. This is done to prevent it from developing into skin cancer. The growth may be removed using various methods such as cryotherapy (freezing), laser therapy, or topical medications.

128 services91 patients

Biopsy of related skin growth, first growth 11102

A biopsy of a skin growth involves taking a small sample of the growth to examine it under a microscope. This helps determine if the growth is harmful. The procedure is typically quick, with minimal discomfort. It's a crucial step in ensuring your skin's health.

113 services89 patients

Biopsy of related skin growth, each additional growth 11103

A biopsy of related skin growth is a procedure where a small piece of skin growth is removed for testing. If additional growths are identified, they may also be biopsied. This helps in diagnosing skin conditions and planning appropriate treatment.

46 services29 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.

45 services45 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

28 services28 patients

Destruction of precancer skin growth, 15 or more growths 17004

This procedure involves removing 15 or more precancerous skin growths to prevent them from developing into cancer. It's done using various methods like freezing, creams, or minor surgery. The goal is to protect your health by stopping cancer before it starts.

27 services18 patients

All potassium hydroxide (koh) preparations Q0112

Potassium hydroxide (KOH) preparations are used in medical testing to identify fungal infections. In this procedure, a sample (like skin, hair, or nail) is collected and treated with KOH solution. This destroys non-fungal cells, making it easier to spot fungi under a microscope.

18 services15 patients

Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm 11602

This procedure involves the surgical removal of a cancerous skin growth on the body, arms, or legs. The growth is between 1.1 and 2.0 cm in size. The goal is to eliminate cancer cells and prevent them from spreading to other parts of the body.

13 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91356 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

$96.36 typical visit price

range $62.96 – $187.60

Typical copayment $24.09 (range $15.74 – $46.90)

Most-billed visit code 99203

Established Patient

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

Most-billed visit code 99213

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.

0/100

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

Individually scored

Quality

Improvement Activities

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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.

DANIEL A GROSS MD

Dermatology (Procedural Dermatology)

18364 CLARK ST
TARZANA, CA 91356

Los Angeles County (818) 345-7122

CHARLES E LINDEN MD

Dermatology (Procedural Dermatology)

18364 CLARK ST
TARZANA, CA 91356

Los Angeles County (818) 345-7122

VALLEY DERMATOLOGIC MEDICAL GROUP, INC

Dermatology

18364 CLARK ST
TARZANA, CA 91356

Los Angeles County (881) 345-7122

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 Ada Winkielman's NPI number?

The NPI number for Ada Winkielman is 1992798870. It was assigned to this individual provider in the NPPES registry on August 25, 2005.

Where is Ada Winkielman located?

Ada Winkielman practices at 18364 Clark St, Tarzana, CA 91356. The listed phone number is (818) 345-7122.

What is Ada Winkielman's specialty?

The primary specialty registered for this NPI is Dermatology, specializing in Dermatopathology, with taxonomy code 207ND0900X.

Is Ada Winkielman enrolled in Medicare?

Yes. Ada Winkielman 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.

When was this NPI record last updated?

The NPPES record for Ada Winkielman was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.