PROVIDER PROFILE · NPI 1811913221

Fred ShahanMD

PRACTICEDANIEL J MARNELL MD APCSee all providers at this practice →

DermatologySan Diego, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

5,648

Unique beneficiaries

—

Total services

10,565

Distinct HCPCS

Medicare payment

$1.2M

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

1,648

Beneficiaries

—

Total drug cost

$417K

Distinct drugs

Brand share

8.4%

Top prescribed drugs

Ketoconazole226 claims

Clobetasol Propionate196 claims

Triamcinolone Acetonide189 claims

Fluocinonide114 claims

Cephalexin110 claims

QUALITY · MIPS · 2024

Final MIPS score

15.8

Quality

0.0

Cost

52.8

Improvement activities

0.0

Promoting interop.

0.0

Payment adjustment

-9.00%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$4K

Payment records

By payment type

Food and Beverage$4K

Travel and Lodging$32

REFERRAL NETWORK

Where Fred Shahan'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). 28 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
FRANCIS, DAVID	558	1,839
Anthony Huynh Dermatology · El Centro, CA	177	334
Unilab Corporation Clinical Laboratory · West Hills, CA	152	376
Daniel Nguyen Dermatology · Anaheim, CA	101	193
William Watts Pathology · San Diego, CA	71	135
Seong Ra Pathology · Los Angeles, CA	58	97
Jock Perkins Physician Assistant · Nampa, ID	54	103
Cheri Ponce Physician Assistant · Fresno, CA	39	79
Robert Stephenson Internal Medicine · Encinitas, CA	32	94
REGENTS OF THE UNIVERSITY OF CALIFORNIA	31	115
Diana Dang Dermatology · El Centro, CA	31	49
PIONEERS MEMORIAL HEALTHCARE DISTRICT	29	49

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