DR. MARK A VIERRA M.D.
NPI 1730187121
Specialist in Poway, CA

Q: What is Mark Vierra's NPI number?

The NPI number for Mark Vierra is 1730187121. It was assigned to this individual provider in the NPPES registry on July 11, 2005.

Q: What is Mark Vierra's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Q: When was this NPI record last updated?

The NPPES record for Mark Vierra was last updated on July 15, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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 July 11, 2005PECOS EnrolledAccepts Medicare Assignment

0/100

CMS Quality Rating

15525 POMERADO RD, SUITE A-2, POWAY, CA 92064(858) 451-3311(858) 451-1142 Get Directions Write a Review

NPPES record last updated: July 15, 2010. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Mark A Vierra M.d. NPPES

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

DR. MARK A VIERRA M.D. (NPI 1730187121) is an individual specialist in Poway, California, licensed in California (A64866) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS and is a graduate of Pennsylvania State University College Of Medicine (1996).

NPPES Registry Identity

NPI1730187121

Entity TypeIndividualMale

Primary Taxonomy174400000X

Provider Legal NameDR. MARK A VIERRACredential: M.D.

Location Address15525 POMERADO RD, SUITE A-2Poway, CA 92064-2435

Mailing Address13186 Sundance AveSan Diego, CA 92129-2458 · (858) 451-3311 · Fax (858) 451-1142

Phone(858) 451-3311

Fax(858) 451-1142

Sole ProprietorNo

Medical School CMSPennsylvania State University College Of MedicineGraduated 1996

Enumeration DateJuly 11, 2005

Last NPPES UpdateJuly 15, 2010

✔ NPI 1730187121 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in CA · A64866

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

15525 POMERADO RD, Poway, CA 92064

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Other Identifiers 3

Medicare UPINH40219CA

Medicare ID-Type UnspecifiedWA64866ACA

Medicaid00A648660CA

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. Mark A Vierra M.d. 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 ID2860685930

PECOS Enrollment IDI20120213000089

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 Reassignment

Medicare enrollment records show Mark Vierra reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Bernardo Dermatology Medical Group Inc

Same address

Dermatology

15525 POMERADO RD, SUITE A2
Poway, CA 92064

Reassigned Medicare billing, California enrollment
9 clinicians in this Medicare group

NPI 1407950785 (858) 451-3311

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 28

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.

Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg J7345

Aminolevulinic acid hcl is a topical gel used to treat certain skin conditions. It works by making affected skin cells more sensitive to light, which is then used to destroy these cells. The gel is applied by a healthcare professional.

6,001 services26 patients

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.

4,043 services572 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.

1,149 services739 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.

1,089 services702 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.

717 services460 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.

532 services392 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.

523 services388 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.

156 services113 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.

144 services99 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.

102 services94 patients

Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm 12032

This procedure involves the repair of a wound between 2.6-7.5 cm located on the scalp, underarms, trunk, arms, or legs. The process includes cleaning, debridement (removal of damaged tissue), and suturing (stitching) of the wound to promote healing.

94 services80 patients

Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm 17262

This procedure involves removing a cancerous skin growth on the trunk, arms, or legs that is between 1.1 and 2.0 cm in size. The growth is destroyed using methods like surgery, laser, or freezing, aiming to eliminate cancer and prevent its spread.

80 services62 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.

72 services72 patients

Biopsy of ear 69100

A biopsy of the ear is a medical procedure where a small sample of tissue is taken from your ear for examination. This helps doctors diagnose any abnormalities or diseases. It's a simple process, usually done under local anesthesia, and has minimal risks.

61 services54 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.

59 services54 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.

40 services40 patients

Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm 11603

This procedure involves the removal of a cancerous skin growth, between 2.1 and 3.0 cm, from the body, arms, or legs. The area is numbed, then the growth is carefully cut out. The goal is to eliminate all cancer cells while minimizing scarring.

33 services30 patients

Simple or single drainage of skin abscess 10060

A simple or single drainage of skin abscess is a procedure to remove pus from a skin infection. A small cut is made on the abscess, the pus is drained out, and the area is cleaned. This helps to reduce pain, speed up recovery, and prevent the spread of infection.

31 services31 patients

Application of light with debridement to destroy precancer skin growth 96574

This procedure involves applying a special light source to the skin after removing dead tissue (debridement). The light helps destroy precancerous growths, preventing them from developing into skin cancer. It's a safe and effective method to keep your skin healthy.

30 services25 patients

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

28 services19 patients

Injection into skin growth, 1-7 growths 11900

This procedure involves injecting medication into 1-7 skin growths. The medication helps to reduce the size of the growths or completely eliminate them. It's a simple, quick, and usually painless process performed by a medical professional.

24 services19 patients

Destruction of skin growth, 15 or more growths 17111

"Destruction of skin growth" refers to a procedure where unwanted skin growths, such as warts or moles, are removed. In this case, 15 or more growths are treated. Techniques may include freezing, burning, or laser therapy. It's a safe, quick process to improve skin health.

24 services21 patients

Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm 13132

This procedure involves the complex repair of a wound in areas like the forehead, cheeks, chin, mouth, neck, underarms, hands, or feet. The wound size ranges from 2.6-7.5 cm. The process includes cleaning, removing damaged tissue, and stitching the wound for proper healing.

23 services20 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

19 services14 patients

Punch biopsy, first skin growth 11104

A punch biopsy is a procedure where a small, circular tool is used to remove a sample of skin tissue. This is usually done to test a skin growth for potential issues. You may feel a pinch, but discomfort is minimal. The area heals quickly.

17 services17 patients

Removal of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm 11622

This procedure involves the careful removal of a cancerous skin growth measuring between 1.1 to 2.0 cm, located on the scalp, neck, hands, or feet. The goal is to eliminate the cancer and prevent its spread. This is done under local anesthesia to minimize discomfort.

16 services16 patients

Destruction of cancer skin growth of trunk, arms, or legs, 2.1-3.0 cm 17263

This procedure targets and eliminates a cancerous skin growth between 2.1 and 3.0 cm on your trunk, arms, or legs. It's done by applying specific treatments like heat, cold, or medicated creams to destroy the cancer cells, preventing them from spreading.

13 services12 patients

Biopsy of lip 40490

A biopsy of the lip involves removing a small piece of tissue from your lip. This tissue is then examined under a microscope to check for abnormalities, like cancer. The procedure is typically quick and involves a local anesthetic to minimize discomfort.

13 services11 patients

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

Other Providers at the Same Location NPPES 20

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

PHILIP GREGORY BOHART M.D

Orthopaedic Surgery

15525 POMERADO RD, SUITE A-1
POWAY, CA 92064

San Diego County (858) 485-0050

DR. JOSHUA MICHAEL HARRIS HALL M.D., PH.D.

Psychiatry & Neurology (Psychiatry)

15525 POMERADO RD, SUITE E-3
POWAY, CA 92064

San Diego County (858) 592-6644

DR. DEBRA JOAN ABEL AU.D.

Audiologist

15525 POMERADO RD, E-1
POWAY, CA 92064

San Diego County (858) 618-1249

YUAN WANG ACUPUNCTURIST

Acupuncturist

15525 POMERADO RD, SUITE E-4
POWAY, CA 92064

San Diego County (858) 829-9485

DR. GEORGE B SACHS MD

Otolaryngology

15525 POMERADO RD
POWAY, CA 92064

San Diego County (858) 485-7870

SAN DIEGO PSYCHOLOGICAL CENTER INC.

Psychologist

15525 POMERADO RD, SUITE B3
POWAY, CA 92064

San Diego County (760) 607-6463

GEORGE B. SACHS M.D. A MEDICAL CORPORATION

Otolaryngology

15525 POMERADO RD, SUITE E1
POWAY, CA 92064

San Diego County (858) 705-1366

MR. THOMAS L DE WILDT LCSW

Social Worker (Clinical)

15525 POMERADO RD, SUITE A-7
POWAY, CA 92064

San Diego County (858) 279-1223

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 Mark Vierra's NPI number?

The NPI number for Mark Vierra is 1730187121. It was assigned to this individual provider in the NPPES registry on July 11, 2005.

Where is Mark Vierra located?

Mark Vierra practices at 15525 Pomerado Rd Suite A-2, Poway, CA 92064. The listed phone number is (858) 451-3311.

What is Mark Vierra's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Mark Vierra enrolled in Medicare?

Yes. Mark Vierra 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 organization bills Medicare for Mark Vierra's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Vierra reassigns Medicare benefits to Bernardo Dermatology Medical Group Inc (Poway, CA). The 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 Mark Vierra'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 Mark Vierra was last updated on July 15, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.