PROVIDER PROFILE · NPI 1730187121

Mark VierraM.D.

DermatologyPoway, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

4,182

Unique beneficiaries

—

Total services

15,133

Distinct HCPCS

Medicare payment

$431K

Peer benchmark

Total Medicare services vs. 1,546 Dermatology providers in CA — top quintile (cohort median 2,504).

PRESCRIBING · PART D · 2024

Total Rx claims

650

Beneficiaries

—

Total drug cost

$81K

Distinct drugs

Brand share

17.4%

Top prescribed drugs

Doxycycline Hyclate128 claims

Triamcinolone Acetonide70 claims

Valacyclovir Hcl58 claims

Ketoconazole58 claims

Hydrocortisone50 claims

QUALITY · MIPS · 2024

Final MIPS score

0.0

Quality

0.0

Cost

0.0

Improvement activities

0.0

Promoting interop.

0.0

Payment adjustment

-9.00%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$425

Payment records

By payment type

Food and Beverage$353

Education$72

REFERRAL NETWORK

Where Mark Vierra's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 13 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
PALOMAR HEALTH	68	137
PALOMAR HEALTH	53	80
Unilab Corporation Clinical Laboratory · West Hills, CA	23	45
Akber Safi Internal Medicine · Poway, CA	17	30
LAWSON, ROBERT	16	18
Jeffrey Lozier Ophthalmology · Poway, CA	16	33
Kathy Clewell Internal Medicine · Poway, CA	16	41
REGENTS OF THE UNIVERSITY OF CALIFORNIA	15	36
Ken Stanley Family Practice · Carlsbad, CA	14	38
William Winternitz Orthopaedic Surgery · Poway, CA	11	22
Elizabeth Salada Internal Medicine · Poway, CA	11	39
Dmitri Segal Diagnostic Radiology · Aurora, CO	11	13

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history