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DR. GEOFFREY LEE GRAHAM M.D.
NPI 1356343073
Hospitalist in Thousand Oaks, CA

Active since August 12, 2005PECOS Enrolled
1534 N MOORPARK RD, NO. 291, THOUSAND OAKS, CA 91360(805) 497-1800(805) 523-7339 Get Directions Write a Review

NPPES record last updated: January 24, 2013. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Geoffrey Lee Graham M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GEOFFREY LEE GRAHAM M.D. (NPI 1356343073) is an individual hospitalist provider in Thousand Oaks, California, licensed in California (G39820) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1356343073
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameDR. GEOFFREY LEE GRAHAMCredential: M.D.
Location Address1534 N MOORPARK RD, NO. 291Thousand Oaks, CA 91360-5129
Mailing Address1534 N Moorpark Rd, #291Thousand Oaks, CA 91360-5129 · (805) 497-1800 · Fax (805) 523-7339
Phone(805) 497-1800
Fax(805) 523-7339
Sole ProprietorNo
Enumeration DateAugust 12, 2005
Last NPPES UpdateJanuary 24, 2013
✔ NPI 1356343073 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in CA · G39820
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
1534 N MOORPARK RD, Thousand Oaks, CA 91360
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Other Identifiers 2

Medicare UPINA47980CA
Medicare PINGW032ZCA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Geoffrey Lee Graham M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Geoffrey Graham reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Alliance Hospitalist Medical Group Inc
1.0 mi
Hospitalist
215 W JANSS RD
Thousand Oaks, CA 91360
  • Reassigned Medicare billing, California enrollment
NPI 1720187230 (805) 497-1800

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
108 services106 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
83 services80 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
74 services32 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
56 services36 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91360 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$140.72 typical visit price
range $62.32 – $185.36
Typical copayment $35.18 (range $15.58 – $46.34)
Most-billed visit code 99204
Established Patient
$108.74 typical visit price
range $20.68 – $151.85
Typical copayment $27.18 (range $5.17 – $37.96)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier34 claims34 services$61.95 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
1 supplier34 claims34 services$31.48 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JONATHAN NASSERI M.D.
Internal Medicine (Hospice and Palliative Medicine)
1534 N MOORPARK RD, STE 290
THOUSAND OAKS, CA 91360
Ventura County (805) 522-2500
PEDRAM BAGHERI MD
Internal Medicine
1534 N MOORPARK RD, 291
THOUSAND OAKS, CA 91360
Ventura County (805) 497-1800

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Geoffrey Graham's NPI number?

The NPI number for Geoffrey Graham is 1356343073. It was assigned to this individual provider in the NPPES registry on August 12, 2005.

Where is Geoffrey Graham located?

Geoffrey Graham practices at 1534 N Moorpark Rd No. 291, Thousand Oaks, CA 91360. The listed phone number is (805) 497-1800.

What is Geoffrey Graham's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Geoffrey Graham enrolled in Medicare?

Yes. Geoffrey Graham is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Geoffrey Graham's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Geoffrey Graham reassigns Medicare benefits to Alliance Hospitalist Medical Group Inc (Thousand Oaks, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Geoffrey Graham's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Geoffrey Graham was last updated on January 24, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.