Dr. Marc W. Weise, MD
- Medicare services, 2024
- 4,631
- Medicare patients, 2024
- 483
- Part D claims, 2024
- 796
- MIPS score, 2024
- 27
- Hospital affiliations
- 2
- Practice address
- 15099 W Mission Hills Rd, Mission Hills, CA 91345
- Practice phone
- Call (805) 773-2650
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Marc W. Weise, M.D., Inc.
Mission Hills, California
Find Dr. Weise'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. Marc W. Weise is an orthopedic surgeon in Mission Hills, California
Dr. Weise practices at Marc W. Weise, M.D., Inc. in Mission Hills, California.
Dr. Weise's NPI, 1609843499, was assigned on March 1, 2006. Dr. Weise graduated from UC San Diego School of Medicine in 1984. Dr. Weise's California license number on file is A44223.
- NPI
- 1609843499NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7719996446
- NPI enumeration date
- March 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 773-2650
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marc W. Weise practices at Marc W. Weise, M.D., Inc. in Mission Hills, California
Dr. Weise's primary practice is Marc W. Weise, M.D., Inc., at 15099 W Mission Hills Rd, Mission Hills, CA 91345 in Los Angeles County. The practice phone is (805) 773-2650.
- Marc W. Weise, M.D., Inc.15099 W Mission Hills Rd, Mission Hills, CA 91345 · Los Angeles CountyPhone(805) 773-2650
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Marc W. Weise is affiliated with 6 sites of care
Dr. Weise's primary practice is Marc W. Weise, M.D., Inc. in Mission Hills, California. Dr. Weise is also affiliated with Dignity Health - Marian Regional Medical Center. Dmand AI also links Dr. Weise to 1 more hospital, 2 home health agencies and 1 physician office, 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. Marc W. Weise's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Weise practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Marc W. Weise, M.D., Inc. | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marc W. Weise is one of 2,056 orthopedic surgeons in California
Orthopaedic surgery is Dr. Weise's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Weise is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery. Dmand AI has Dr. Weise's licenses on file in 3 states: California, Ohio and Louisiana.
Specialties and state licenses
- Orthopaedic surgery, CaliforniaPrimary
- Ohio license
- Louisiana license
Clinical focus
Dmand AI lists arthritis, bursitis, carpal tunnel syndrome, enthesopathy in arms, hand joint or tendon inflammation, hip replacement, joint pain and knee arthroscopy among the conditions Dr. Weise treats.
Orthopedic surgeons near Dr. Weise
Counts of orthopedic surgeons 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. Marc W. Weise billed Medicare for 4,631 services in 2024
CMS data shows 4,631 Medicare services from Dr. Weise across 11 procedure codes in 2024, for 483 Medicare patients. Medicare paid $164,119 for them.
Dr. Weise's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 2,6762024: 2,8858%
- Office and hospital visits
- 2023: 1,0542024: 1,0312%
- Surgery
- 2023: 6692024: 7157%
Where Dr. Weise's Medicare services took place, 2024
- In an office4,58299%
- In a facility491%
Dr. Weise compared with the California median for orthopedic surgeons, 2024
- Dr. Weise
- California median
- Medicare services
- 4,631vs 6836.8 times
- Medicare patients
- 483vs 2152.2 times
- Part D claims
- 742vs 7010.6 times
Medians across 1,844 orthopedic surgeons in California with Dmand AI profiles that report each measure.
Dr. Weise'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Weise and other orthopedic surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marc W. Weise treated 483 Medicare patients in 2024, average age 77
CMS counts 483 Medicare patients who saw Dr. Weise in 2024. The largest group is 75 to 84, with 222 patients. 75% of them have arthritis, and 75% have high cholesterol. Their average risk score is 0.95, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Weise's median patient age at 73, with 59% women.
Dr. Weise's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Weise's Medicare patients by sex, 2024
- Women28860%
- Men19540%
Chronic conditions among Dr. Weise's Medicare patients, 2024
- Arthritis75%
- High cholesterol75%
- High blood pressure70%
- Ischemic heart disease24%
- Mood disorders21%
- Chronic kidney disease19%
- Diabetes19%
- Anxiety18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Weise's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marc W. Weise wrote 796 Medicare Part D claims in 2024
In 2024, Dr. Weise wrote 796 Medicare Part D claims for 172 patients. 93% of them were for generic drugs. CMS names the drug for 742 of them, across 14 drugs with 11 or more claims each, at $6,002 in total drug cost. In 2023, CMS named 552 claims across 13 drugs.
Dr. Weise's Part D claims by kind of drug, 2024
- Generic742 claims93%
- Brand-name54 claims7%
Dr. Weise'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. Weise's Part D claims, 2024
- Opioids39%308 of 796 claims
- Antibiotics24%189 of 796 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: 5522024: 74234%
Drugs named by CMS: 14 in 2024, 13 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. Marc W. Weise scored 27 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 27 out of 100 for Dr. Weise for performance year 2024, reported individually. Dr. Weise accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 39 procedures of knee replacement by Dr. Weise, more than 72% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Weise's MIPS scores, performance year 2024
- 27of 100Final score
- 10.2of 100Quality
- 0of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Weise ranks in Medicare procedure volume
- Knee replacement
- 72nd percentile39 procedures
- Hip replacement
- 69th percentile23 procedures
- Upper limb (arm) arthroscopy (minimally invasive joint repair)
- 48th percentile12 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Lower limb (leg) arthroscopy (minimally invasive joint repair): 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Marc W. Weise received $2,027 in industry payments from 2017 to 2025
CMS Open Payments shows 15 general payments to Dr. Weise from 5 drug and device companies from 2017 to 2025. Travel and lodging make up the largest share, 49% of the total. Smith & Nephew, Inc. paid the most, $1,126.
General payments to Dr. Weise by program year, 2017 to 2025
General payments to Dr. Weise by kind, 2017 to 2025
- Travel and lodging$98849%
- Food and beverage$87943%
- Education$1608%
Companies that paid Dr. Weise the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marc W. Weise graduated from UC San Diego School of Medicine
Dr. Weise graduated from UC San Diego School of Medicine in 1984.
- Medical school
- Board certified in orthopaedic surgery
Source: Dmand AI Professional Profile Data
Dr. Marc W. Weise accepts plans from 11 insurance carriers
Dr. Weise is in network with 11 carriers, including Elevance, Aetna and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Elevance
- Aetna
- United Healthcare
- Humana
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Aspirus Health Plan
- +3 more carriersWith a free account
Plan types Dr. Weise accepts, by number of carriers
- Medicare8
- PPO7
- POS5
- HMO4
- EPO3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Marc W. Weise'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Marc W. Weise
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. Marc W. Weise's NPI number?
Dr. Marc W. Weise's NPI number is 1609843499. It was assigned on March 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marc W. Weise?
Dr. Marc W. Weise is an orthopedic surgeon in Mission Hills, California. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Marc W. Weise practice?
Dr. Weise practices at 15099 W Mission Hills Rd, Mission Hills, CA 91345. Dr. Weise's primary practice is Marc W. Weise, M.D., Inc. in Mission Hills, California. Dmand AI also links Dr. Weise to 1 hospital, 2 home health agencies and 1 physician office.
What is Dr. Marc W. Weise's office phone number?
The practice phone on file for Dr. Weise is (805) 773-2650.
What is Dr. Marc W. Weise's medical license number?
Dr. Weise's California license number on file is A44223, one of the licenses on file in 3 states.
Which states has Dr. Marc W. Weise been licensed in?
Dmand AI has state licenses on file for Dr. Weise in California (1998 to 2025), Ohio (1989 to 1992) and Louisiana (1985 to 1989).
Which hospitals is Dr. Marc W. Weise affiliated with?
Dr. Weise is affiliated with Dignity Health - Marian Regional Medical Center. Dmand AI links Dr. Weise to 1 more hospital.
Does Dr. Marc W. Weise accept Medicare?
Yes. CMS data shows Dr. Weise billed Medicare for 4,631 services in 2024, and Dr. Weise accepts Medicare assignment.
What is Dr. Marc W. Weise's MIPS score?
Dr. Weise's MIPS final score for performance year 2024 is 27 out of 100, reported individually.
How many Medicare patients does Dr. Marc W. Weise see?
CMS counts 483 Medicare patients who saw Dr. Weise in 2024, with an average age of 77.
Show 7 more questionsShow fewer questions
Is Dr. Marc W. Weise board certified?
Yes. Dr. Weise is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery.
What services does Dr. Marc W. Weise bill to Medicare?
In 2024, Dr. Weise's most billed Medicare services were injected or infused drug (J3301), office visit, established patient (99213) and surgery: bones and joints (20611).
Where did Dr. Marc W. Weise go to medical school?
Dr. Weise graduated from UC San Diego School of Medicine in 1984.
What drugs does Dr. Marc W. Weise prescribe most?
In 2024 Medicare Part D data, Dr. Weise's most prescribed drugs by claims were Oxycodone-Acetaminophen, Sulfamethoxazole-Trimethoprim and Tramadol HCl.
Has Dr. Marc W. Weise received payments from drug or device companies?
CMS Open Payments shows $2,027 in general payments to Dr. Weise from 5 companies from 2017 to 2025. The largest total came from Smith & Nephew, Inc.
How long has Dr. Marc W. Weise been practicing?
Dr. Weise graduated from medical school in 1984, 42 years ago.
What insurance does Dr. Marc W. Weise accept?
Dr. Weise is in network with 11 carriers, including Elevance, Aetna and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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