What is William Klein's specialty?

William Klein (NPI 1205834819) is a Medicare-billing provider whose primary specialty is Internal Medicine in Newport Beach, CA.

Where does William Klein practice?

William Klein practices in Newport Beach, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1205834819.

How much does Medicare pay William Klein?

William Klein (NPI 1205834819) received approximately $165K in total Medicare Part B payments, serving 350 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1205834819

William KleinMD

PRACTICEHUNTINGTON BEACH INTERNAL MEDICINE GROUP INCSee all providers at this practice →

Internal MedicineNewport Beach, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,001

Unique beneficiaries

—

Total services

1,498

Distinct HCPCS

Medicare payment

$163K

Peer benchmark

Total Medicare services vs. 10,499 Internal Medicine providers in CA — top quintile (cohort median 531).

PRESCRIBING · PART D · 2024

Total Rx claims

5,212

Beneficiaries

—

Total drug cost

$608K

Distinct drugs

Brand share

20.3%

Top prescribed drugs

Atorvastatin Calcium283 claims

Levothyroxine Sodium278 claims

Fluticasone/Umeclidin/Vilanter250 claims

Amlodipine Besylate211 claims

Rosuvastatin Calcium194 claims

QUALITY · MIPS · 2024

Final MIPS score

75.0

Quality

25.0

Cost

48.8

Improvement activities

0.0

Promoting interop.

0.0

Payment adjustment

0.00%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$2K

Payment records

By payment type

Food and Beverage$2K

Top paying entities

Food and Beverage$2K

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (5)

Home health agency

Home health agency

Hospital

Hospital

Hospital

REFERRAL NETWORK

Where William Klein'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). 6 inbound referrers · 21 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	30	104
ORANGE COAST MEMORIAL MEDICAL CENTER	20	76
Shaya Ghazinoor Diagnostic Radiology · Newport Beach, CA	14	35
William Vandalsem Diagnostic Radiology · Newport Beach, CA	14	35
Ryan Klein Internal Medicine · Newport Beach, CA	12	64
Frederick Birnberg Diagnostic Radiology · Newport Beach, CA	12	34

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
WHITEFIELD MEDICAL LABORATORY INC	130	364
HOAG MEMORIAL HOSPITAL PRESBYTERIAN	117	550
Laboratory Corporation Of America Clinical Laboratory · San Diego, CA	32	100
ORANGE COAST MEMORIAL MEDICAL CENTER	32	113
BIODATA MEDICAL LABORATORIES, INC	27	84
Unilab Corporation Clinical Laboratory · West Hills, CA	27	102
Timothy Gibson Orthopedic Surgery · Huntington Beach, CA	25	111
CALIFORNIA LABORATORY SCIENCES LLC	20	63
UNIVERSITY OF CALIFORNIA IRVINE	20	54
William Vandalsem Diagnostic Radiology · Newport Beach, CA	18	54
Naser Rahbar Diagnostic Radiology · Anaheim, CA	15	79
Jinsoo Keyoung Diagnostic Radiology · Stanford, CA	14	67

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

Healthparse Signals

Monitor this provider for changes — dated NPI change events