Dr. Geoffrey Lee Graham, MD
- Medicare services, 2024
- 321
- Medicare patients, 2024
- 116
- Part D claims, 2024
- 35
- Industry payments
- $280
- Affiliated sites
- 2
- Practice address
- 1920 E Los Angeles Ave, Simi Valley, CA 93065
- Practice phone
- Call (805) 306-8800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Simi Surgery Center
Surgery Center - Medicare-Certified · Simi Valley, California
Find Dr. Graham's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Geoffrey Lee Graham is a hospitalist in Simi Valley, California
Dr. Graham practices at Simi Surgery Center in Simi Valley, California.
Dr. Graham's NPI, 1356343073, was assigned on August 12, 2005. Dr. Graham graduated from David Geffen School of Medicine at UCLA in 1978. Dr. Graham holds California license G39820.
- NPI
- 1356343073NPI Registry (opens in a new tab)
- NPI enumeration date
- August 12, 2005
- NPI status
- Active
- Practice phone
- (805) 306-8800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 74
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Geoffrey Lee Graham practices at Simi Surgery Center in Simi Valley, California
Dr. Graham's primary practice is Simi Surgery Center, at 1920 E Los Angeles Ave, Simi Valley, CA 93065. The practice phone is (805) 306-8800.
- Simi Surgery Center1920 E Los Angeles Ave, Simi Valley, CA 93065Phone(805) 306-8800
Source: Dmand AI Affiliation Data
Dr. Geoffrey Lee Graham is affiliated with 2 sites of care
Dr. Graham's primary practice is Simi Surgery Center in Simi Valley, California. Dmand AI also links Dr. Graham to 1 physician office, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Geoffrey Lee Graham's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Graham practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Simi Surgery Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Geoffrey Lee Graham is one of 3,186 hospitalists in California
Hospitalist is Dr. Graham's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Graham is board certified in internal medicine by the American Board of Internal Medicine. Dr. Graham is licensed in California.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
Clinical focus
Dmand AI lists acute respiratory failure, acute stomach ulcer, anemia, cardiac arrhythmia, cardiomyopathy, chronic hypertension, cirrhosis and congestive heart failure among the conditions Dr. Graham treats.
Hospitalists near Dr. Graham
Counts of hospitalists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Geoffrey Lee Graham billed Medicare for 321 services in 2024
CMS data shows 321 Medicare services from Dr. Graham across 4 procedure codes in 2024, for 116 Medicare patients. Medicare paid $30,845 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Graham's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8332024: 32161%
Dr. Graham compared with the California median for hospitalists, 2024
- Dr. Graham
- California median
- Medicare services
- 321vs 43025% below
- Medicare patients
- 116vs 20142% below
- Part D claims
- 54vs 6922% below
Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.
Dr. Graham's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Graham?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Graham and other hospitalists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Geoffrey Lee Graham treated 116 Medicare patients in 2024, average age 78
CMS counts 116 Medicare patients who saw Dr. Graham in 2024. The largest group is 65 to 74, with 44 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.49, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Graham's median patient age at 87, with 55% women.
Dr. Graham's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Graham's Medicare patients by sex, 2024
- Women7262%
- Men4438%
Chronic conditions among Dr. Graham's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis70%
- Ischemic heart disease34%
- Atrial fibrillation30%
- Chronic kidney disease28%
- Mood disorders28%
- Anxiety27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Graham's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 87
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Geoffrey Lee Graham wrote 35 Medicare Part D claims in 2024
In 2024, Dr. Graham wrote 35 Medicare Part D claims for 12 patients. 89% of them were for generic drugs. They cover 4 drugs, with $314 in total drug cost. In 2021, CMS named 58 claims across 4 drugs.
Dr. Graham's Part D claims by kind of drug, 2024
- Generic31 claims89%
- Brand-name and other4 claims11%
Dr. Graham's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 582022: 547%
Drugs named by CMS: 4 in 2022, 4 in 2021.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Geoffrey Lee Graham received $280 in industry payments from 2017 to 2023
CMS Open Payments shows 13 general payments to Dr. Graham from 4 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $125.
General payments to Dr. Graham by program year, 2017 to 2023
Companies that paid Dr. Graham the most, 2017 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Geoffrey Lee Graham graduated from David Geffen School of Medicine at UCLA
Dr. Graham graduated from David Geffen School of Medicine at UCLA in 1978. Dr. Graham is a member of SHM.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Geoffrey Lee Graham accepts plans from 2 insurance carriers
Dr. Graham is in network with 2 carriers, including Excellus BlueCross BlueShield and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Excellus BlueCross BlueShield
- CMS Medicare
Plan types Dr. Graham accepts, by number of carriers
- Medicare2
- EPO1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Geoffrey Lee Graham's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Geoffrey Lee Graham
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Geoffrey Lee Graham's NPI number?
Dr. Geoffrey Lee Graham's NPI number is 1356343073. It was assigned on August 12, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Geoffrey Lee Graham?
Dr. Geoffrey Lee Graham is a hospitalist in Simi Valley, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Geoffrey Lee Graham practice?
Dr. Graham practices at 1920 E Los Angeles Ave, Simi Valley, CA 93065. Dr. Graham's primary practice is Simi Surgery Center in Simi Valley, California. Dmand AI also links Dr. Graham to 1 physician office.
What is Dr. Geoffrey Lee Graham's office phone number?
The practice phone on file for Dr. Graham is (805) 306-8800.
What is Dr. Geoffrey Lee Graham's medical license number?
Dr. Graham holds California license G39820.
Does Dr. Geoffrey Lee Graham accept Medicare?
Yes. CMS data shows Dr. Graham billed Medicare for 321 services in 2024.
How many Medicare patients does Dr. Geoffrey Lee Graham see?
CMS counts 116 Medicare patients who saw Dr. Graham in 2024, with an average age of 78.
Is Dr. Geoffrey Lee Graham board certified?
Yes. Dr. Graham is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Geoffrey Lee Graham bill to Medicare?
In 2024, Dr. Graham's most billed Medicare services were hospital inpatient care (99223), hospital inpatient care (99239) and hospital inpatient care (99232).
Where did Dr. Geoffrey Lee Graham go to medical school?
Dr. Graham graduated from David Geffen School of Medicine at UCLA in 1978.
Show 4 more questionsShow fewer questions
What drugs does Dr. Geoffrey Lee Graham prescribe most?
In 2022 Medicare Part D data, Dr. Graham's most prescribed drugs by claims were Amoxicillin-Clavulanate Potass, Cephalexin and Carvedilol.
Has Dr. Geoffrey Lee Graham received payments from drug or device companies?
CMS Open Payments shows $280 in general payments to Dr. Graham from 4 companies from 2017 to 2023. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Geoffrey Lee Graham been practicing?
Dr. Graham graduated from medical school in 1978, 48 years ago.
What insurance does Dr. Geoffrey Lee Graham accept?
Dr. Graham is in network with 2 carriers, including Excellus BlueCross BlueShield and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
Selling to hospitalist practices?
See hospitalists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card