What is Dale Ritzo's specialty?

Dale Ritzo (NPI 1255499323) is a Medicare-billing provider whose primary specialty is Internal Medicine in San Mateo, CA.

Where does Dale Ritzo practice?

Dale Ritzo practices in San Mateo, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1255499323.

How much does Medicare pay Dale Ritzo?

Dale Ritzo (NPI 1255499323) received approximately $89K in total Medicare Part B payments, serving 315 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1255499323

Dale RitzoM.D.

Internal MedicineSan Mateo, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

767

Unique beneficiaries

—

Total services

986

Distinct HCPCS

Medicare payment

$81K

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

2,989

Beneficiaries

—

Total drug cost

$191K

Distinct drugs

Brand share

15.2%

Top prescribed drugs

Levothyroxine Sodium261 claims

Rosuvastatin Calcium231 claims

Amlodipine Besylate213 claims

Atorvastatin Calcium205 claims

Lorazepam163 claims

QUALITY · MIPS · 2024

Final MIPS score

17.5

Quality

0.0

Cost

58.5

Improvement activities

0.0

Promoting interop.

0.0

Payment adjustment

-9.00%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (5)

Home health agency

Home health agency

Home health agency

Home health agency

Hospital

REFERRAL NETWORK

Where Dale Ritzo'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). 18 inbound referrers · 51 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Jeffrey Guttas Cardiology · San Mateo, CA	40	95
Harriet Borofsky Diagnostic Radiology · San Mateo, CA	35	77
WEBB, PETER	31	125
Avanti Ambekar Diagnostic Radiology · San Mateo, CA	30	61
ELLISTON, ROBERT	25	101
John Connolly Urology · Burlingame, CA	25	88
Clay Napper Diagnostic Radiology · San Mateo, CA	22	60
Susan Wolf Dermatology · San Mateo, CA	21	55
NPI 1144281106	20	98
Michael Macdonald Ophthalmology · San Mateo, CA	17	26
Carie Chui Dermatology · San Mateo, CA	16	52
Robert Filer Ophthalmology · San Mateo, CA	15	31

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
MILLS-PENINSULA HEALTH SERVICES	407	3,412
Jeffrey Guttas Cardiology · San Mateo, CA	47	154
Avanti Ambekar Diagnostic Radiology · San Mateo, CA	39	93
MARCUS, DAVID	33	79
Arthur Li Diagnostic Radiology · Burlingame, CA	30	69
Diana Baker Diagnostic Radiology · San Francisco, CA	28	83
WEBB, PETER	28	96
Kelly Broderick Diagnostic Radiology · San Mateo, CA	28	76
Lenora Fung Diagnostic Radiology · Burlingame, CA	26	69
Harriet Borofsky Diagnostic Radiology · San Mateo, CA	25	59
ELLISTON, ROBERT	25	114
Dorra Sellami Diagnostic Radiology · Burlingame, CA	25	77

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