Dr. Mark P. Gellman, DO
- Medicare services, 2024
- 647
- Medicare patients, 2024
- 324
- Part D claims, 2024
- 533
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 2900 Lomita Blvd, Torrance, CA 90505
- Practice phone
- Call (310) 784-6300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Torrance Memorial Physician Network
Torrance, California
Find Dr. Gellman'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. Mark P. Gellman is an emergency medicine physician in Torrance, California
Dr. Gellman practices at Torrance Memorial Physician Network in Torrance, California.
Dr. Gellman's NPI, 1669493375, was assigned on July 21, 2006. Dr. Gellman graduated from Chicago College of Osteopathic Medicine at Midwestern University in 1994. Dr. Gellman holds California license 20A8207.
- NPI
- 1669493375NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022022581
- NPI enumeration date
- July 21, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 784-6300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark P. Gellman practices at Torrance Memorial Physician Network in Torrance, California
Dr. Gellman's primary practice is Torrance Memorial Physician Network, at 2900 Lomita Blvd, Torrance, CA 90505 in Los Angeles County. The practice phone is (310) 784-6300.
- Torrance Memorial Physician Network2900 Lomita Blvd, Torrance, CA 90505 · Los Angeles CountyPhone(310) 784-6300
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark P. Gellman is affiliated with 3 sites of care and 2 medical groups
Dr. Gellman's primary practice is Torrance Memorial Physician Network in Torrance, California. Dr. Gellman is also affiliated with Torrance Memorial Medical Center. The medical group on file is Torrance Memorial Physician Network. Dmand AI also links Dr. Gellman to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark P. Gellman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gellman practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Torrance Memorial Physician Network | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark P. Gellman is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Gellman's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Gellman is board certified in emergency medicine by the American Osteopathic Board of Emergency Medicine. Dr. Gellman is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Gellman
Counts of emergency medicine physicians 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. Mark P. Gellman billed Medicare for 647 services in 2024
CMS data shows 647 Medicare services from Dr. Gellman across 11 procedure codes in 2024, for 324 Medicare patients. Medicare paid $32,019 for them. Every service was in an office.
Dr. Gellman's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3522024: 3374%
- Lab and pathology
- 2023: 1642024: 18110%
- Tests and treatments
- 2023: 572024: 6311%
- Imaging
- 2023: 692024: 5520%
- Other services
- 2023: 02024: 11
Dr. Gellman compared with the California median for emergency medicine physicians, 2024
- Dr. Gellman
- California median
- Medicare services
- 647vs 2652.4 times
- Medicare patients
- 324vs 24333% above
- Part D claims
- 414vs 626.7 times
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Gellman'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. Gellman?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gellman and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark P. Gellman treated 324 Medicare patients in 2024, average age 74
CMS counts 324 Medicare patients who saw Dr. Gellman in 2024. The largest group is 65 to 74, with 157 patients. 75% of them have high cholesterol, and 61% have high blood pressure. 10% are also on Medicaid. Their average risk score is 1.04, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gellman's median patient age at 41, with 59% women.
Dr. Gellman's Medicare patients by age, 2024
Dr. Gellman's Medicare patients by sex, 2024
- Women20062%
- Men12438%
Chronic conditions among Dr. Gellman's Medicare patients, 2024
- High cholesterol75%
- High blood pressure61%
- Arthritis43%
- Diabetes21%
- Osteoporosis21%
- Anxiety20%
- Cancer20%
- Ischemic heart disease20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gellman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 41
Patient panel by sex, all payers
- Women59%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark P. Gellman wrote 533 Medicare Part D claims in 2024
In 2024, Dr. Gellman wrote 533 Medicare Part D claims for 285 patients. 83% of them were for generic drugs. CMS names the drug for 414 of them, across 14 drugs with 11 or more claims each, at $6,365 in total drug cost. In 2023, CMS named 462 claims across 15 drugs.
Dr. Gellman's Part D claims by kind of drug, 2024
- Generic443 claims83%
- Brand-name and other90 claims17%
Dr. Gellman's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Gellman's Part D claims, 2024
- Antibiotics43%231 of 533 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4622024: 41410%
Drugs named by CMS: 14 in 2024, 15 in 2023.
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
Dr. Mark P. Gellman ranks in the 63rd percentile for removal of tissue in Medicare
Dr. Gellman accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 12 procedures of removal of tissue by Dr. Gellman, more than 63% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Gellman ranks in Medicare procedure volume
- Removal of tissue
- 63rd percentile12 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of nail tissue: 1 to 10 procedures (CMS shows small counts as a range)
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Mark P. Gellman graduated from Chicago College of Osteopathic Medicine at Midwestern University
Dr. Gellman graduated from Chicago College of Osteopathic Medicine at Midwestern University in 1994. Dr. Gellman is a member of AOA.
- Medical school
- Board certified in emergency medicine
- Board certified in emergency medicine
- Board certified in 2002 - 2026
- Board certified in 2002 - 2006
- Board certified in 1999 - 2012
Source: Dmand AI Professional Profile Data
Dr. Mark P. Gellman accepts plans from 6 insurance carriers
Dr. Gellman is in network with 6 carriers, including United Healthcare, Aspirus Health Plan and Blue Cross and Blue Shield of Kansas City. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
- United Healthcare
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- Elevance
- HCSC
Plan types Dr. Gellman accepts, by number of carriers
- PPO3
- Medicare2
- POS2
- EPO1
- HMO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mark P. Gellman'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Mark P. Gellman
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. Mark P. Gellman's NPI number?
Dr. Mark P. Gellman's NPI number is 1669493375. It was assigned on July 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark P. Gellman?
Dr. Mark P. Gellman is an emergency medicine physician in Torrance, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Mark P. Gellman practice?
Dr. Gellman practices at 2900 Lomita Blvd, Torrance, CA 90505. Dr. Gellman's primary practice is Torrance Memorial Physician Network in Torrance, California. Dmand AI also links Dr. Gellman to 1 group practice or clinic and 1 medical group.
What is Dr. Mark P. Gellman's office phone number?
The practice phone on file for Dr. Gellman is (310) 784-6300.
What is Dr. Mark P. Gellman's medical license number?
Dr. Gellman holds California license 20A8207.
Which hospitals is Dr. Mark P. Gellman affiliated with?
Dr. Gellman is affiliated with Torrance Memorial Medical Center.
What medical group is Dr. Mark P. Gellman part of?
Dr. Gellman is linked to Torrance Memorial Physician Network. Dmand AI links Dr. Gellman to 1 more medical group.
Does Dr. Mark P. Gellman accept Medicare?
Yes. CMS data shows Dr. Gellman billed Medicare for 647 services in 2024, and Dr. Gellman accepts Medicare assignment.
How many Medicare patients does Dr. Mark P. Gellman see?
CMS counts 324 Medicare patients who saw Dr. Gellman in 2024, with an average age of 74.
Is Dr. Mark P. Gellman board certified?
Yes. Dr. Gellman is board certified in emergency medicine by the American Osteopathic Board of Emergency Medicine.
Show 5 more questionsShow fewer questions
What services does Dr. Mark P. Gellman bill to Medicare?
In 2024, Dr. Gellman's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and office visit, new patient (99203).
Where did Dr. Mark P. Gellman go to medical school?
Dr. Gellman graduated from Chicago College of Osteopathic Medicine at Midwestern University in 1994.
What drugs does Dr. Mark P. Gellman prescribe most?
In 2024 Medicare Part D data, Dr. Gellman's most prescribed drugs by claims were Cefdinir, Doxycycline Monohydrate and Albuterol Sulfate Hfa.
How long has Dr. Mark P. Gellman been practicing?
Dr. Gellman graduated from medical school in 1994, 32 years ago.
What insurance does Dr. Mark P. Gellman accept?
Dr. Gellman is in network with 6 carriers, including United Healthcare, Aspirus Health Plan and Blue Cross and Blue Shield of Kansas City. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
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