What is Gregory Spencer's specialty?

Gregory Spencer (NPI 1821127770) is a Medicare-billing provider whose primary specialty is Ophthalmology in Oxnard, CA.

Where does Gregory Spencer practice?

Gregory Spencer practices in Oxnard, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1821127770.

How much does Medicare pay Gregory Spencer?

Gregory Spencer (NPI 1821127770) received approximately $300K in total Medicare Part B payments, serving 661 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1821127770

Gregory SpencerM.D.

OphthalmologyOxnard, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,338

Unique beneficiaries

—

Total services

2,138

Distinct HCPCS

Medicare payment

$295K

Peer benchmark

Total Medicare services vs. 2,144 Ophthalmology providers in CA — above median (cohort median 1,859).

PRESCRIBING · PART D · 2024

Total Rx claims

658

Beneficiaries

—

Total drug cost

$84K

Distinct drugs

Brand share

50.8%

Top prescribed drugs

Latanoprost119 claims

Besifloxacin Hcl98 claims

Timolol Maleate81 claims

Loteprednol Etabonate54 claims

Tobramycin/Dexamethasone44 claims

QUALITY · MIPS · 2024

Final MIPS score

22.9

Quality

0.0

Cost

76.5

Improvement activities

0.0

Promoting interop.

0.0

Payment adjustment

-6.25%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$39

Payment records

By payment type

Food and Beverage$39

Top paying entities

Food and Beverage$39

REFERRAL NETWORK

Where Gregory Spencer'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). 37 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Spencer Eye Surgery & Laser Center, Llc Ambulatory Surgical Center · Camarillo, CA	252	511
Unilab Corporation Clinical Laboratory · West Hills, CA	240	593
COMMUNITY MEMORIAL HEALTH SYSTEM	84	169
Alireza Katouzian Pain Management · Camarillo, CA	64	104
DIGNITY HEALTH	60	113
Kent Swanson Anesthesiology · Oxnard, CA	58	111
Mark Harlacher Anesthesiology · Oxnard, CA	45	64
DIGNITY HEALTH	31	47
Scott Zager Cardiology · Oxnard, CA	30	69
David Schmidt Cardiology · Oxnard, CA	23	53
Tejal Patel Anesthesiology · Oxnard, CA	21	28
Jeffrey Allan Internal Medicine · Camarillo, CA	21	55

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

Healthparse Signals

Monitor this provider for changes — dated NPI change events