Dr. Marcia Menezes Walker, MD
- Medicare services, 2024
- 691
- Medicare patients, 2024
- 547
- MIPS score, 2024
- 89
- Hospital affiliations
- 3
- Industry payments
- $136
- Practice address
- 1180 Post St, San Francisco, CA 94109
- Practice phone
- Call (480) 306-6949
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Simonmed Imaging
San Francisco, California
Find Dr. Walker'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. Marcia Menezes Walker is a diagnostic radiologist in San Francisco, California
Dr. Walker practices at Simonmed Imaging in San Francisco, California.
Dr. Walker's NPI, 1487815502, was assigned on June 20, 2008. Dr. Walker graduated from Marshall University Joan C. Edwards School of Medicine in 2003. Dr. Walker holds California license A112356.
- NPI
- 1487815502NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254476831
- NPI enumeration date
- June 20, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (480) 306-6949
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marcia Menezes Walker practices at Simonmed Imaging in San Francisco, California
Dr. Walker's primary practice is Simonmed Imaging, at 1180 Post St, San Francisco, CA 94109 in San Francisco County. The practice phone is (480) 306-6949.
- Simonmed Imaging1180 Post St, San Francisco, CA 94109 · San Francisco CountyPhone(480) 306-6949
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Marcia Menezes Walker is affiliated with 4 sites of care and 9 medical groups
Dr. Walker's primary practice is Simonmed Imaging in San Francisco, California. Dr. Walker is also affiliated with Stanford Hospital at 300 Pasteur Drive. The medical group on file is SimonMed Imaging. Dmand AI also links Dr. Walker to 2 more hospitals and 8 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marcia Menezes Walker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walker practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Simonmed Imaging | Available with a free account |
| +3 more sites and 8 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marcia Menezes Walker is one of 4,096 diagnostic radiologists in California
Diagnostic radiology is Dr. Walker's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Walker is board certified in diagnostic radiology by the American Board of Radiology. Dmand AI has Dr. Walker's licenses on file in 7 states: California, New York, Louisiana, Pennsylvania, New Jersey, Arkansas and Connecticut.
Specialties and state licenses
- Diagnostic radiology, CaliforniaPrimary
- New York license
- Louisiana license
- Pennsylvania license
- New Jersey license
- Arkansas license
- Connecticut license
Diagnostic radiologists near Dr. Walker
Counts of diagnostic radiologists 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. Marcia Menezes Walker billed Medicare for 691 services in 2024
CMS data shows 691 Medicare services from Dr. Walker across 16 procedure codes in 2024, for 547 Medicare patients. Medicare paid $13,866 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Walker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 242024: 6782725%
- Tests and treatments
- 2023: 02024: 13
Dr. Walker compared with the California median for diagnostic radiologists, 2024
- Dr. Walker
- California median
- Medicare services
- 691vs 2,28170% below
- Medicare patients
- 547vs 1,34659% below
Medians across 3,734 diagnostic radiologists in California with Dmand AI profiles that report each measure.
Dr. Walker'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marcia Menezes Walker treated 547 Medicare patients in 2024, average age 76
CMS counts 547 Medicare patients who saw Dr. Walker in 2024. The largest group is 75 to 84, with 201 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 30% are also on Medicaid. Their average risk score is 2.00, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Walker's median patient age at 52, with 51% women.
Dr. Walker's Medicare patients by age, 2024
Dr. Walker's Medicare patients by sex, 2024
- Women31958%
- Men22842%
Chronic conditions among Dr. Walker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Chronic kidney disease48%
- Ischemic heart disease40%
- Mood disorders35%
- Diabetes34%
- Depression32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Walker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women51%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marcia Menezes Walker scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Walker for performance year 2024, reported as part of a group. Dr. Walker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Walker's MIPS scores, performance year 2024
- 89of 100Final score
- 87.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Marcia Menezes Walker received $136 in industry payments from 2018 to 2019
CMS Open Payments shows 2 general payments to Dr. Walker from 2 drug and device companies from 2018 to 2019. Food and beverage make up the largest share, 100% of the total. Genentech, Inc. paid the most, $125.
General payments to Dr. Walker by program year, 2018 to 2019
Companies that paid Dr. Walker the most, 2018 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marcia Menezes Walker graduated from Marshall University Joan C. Edwards School of Medicine
Dr. Walker graduated from Marshall University Joan C. Edwards School of Medicine in 2003.
- Medical school
- Board certified in diagnostic radiology
Source: Dmand AI Professional Profile Data
Dr. Marcia Menezes Walker accepts plans from 8 insurance carriers
Dr. Walker is in network with 8 carriers, including Aetna, United Healthcare and Aspirus Health Plan. POS plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- Blue Cross and Blue Shield of Louisiana
- CMS Medicare
- Elevance
- HCSC
Plan types Dr. Walker accepts, by number of carriers
- POS4
- PPO4
- Medicare3
- EPO2
- HMO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Marcia Menezes Walker'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 DataDmand AI Org Hierarchy 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) |
| 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) |
| 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. Marcia Menezes Walker
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. Marcia Menezes Walker's NPI number?
Dr. Marcia Menezes Walker's NPI number is 1487815502. It was assigned on June 20, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Marcia Menezes Walker?
Dr. Marcia Menezes Walker is a diagnostic radiologist in San Francisco, California. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Marcia Menezes Walker practice?
Dr. Walker practices at 1180 Post St, San Francisco, CA 94109. Dr. Walker's primary practice is Simonmed Imaging in San Francisco, California. Dmand AI also links Dr. Walker to 2 hospitals and 8 medical groups.
What is Dr. Marcia Menezes Walker's office phone number?
The practice phone on file for Dr. Walker is (480) 306-6949.
What is Dr. Marcia Menezes Walker's medical license number?
Dr. Walker holds California license A112356, one of the licenses on file in 7 states.
Which states has Dr. Marcia Menezes Walker been licensed in?
Dmand AI has state licenses on file for Dr. Walker in California (2010 to 2026), New York (2008 to 2027), Louisiana (2023 to 2026), Pennsylvania (2011 to 2022), New Jersey (2011 to 2015), Arkansas (2011 to 2012) and Connecticut (2011 to 2012).
Which hospitals is Dr. Marcia Menezes Walker affiliated with?
Dr. Walker is affiliated with Stanford Hospital at 300 Pasteur Drive. Dmand AI links Dr. Walker to 2 more hospitals.
What medical group is Dr. Marcia Menezes Walker part of?
Dr. Walker is linked to SimonMed Imaging. Dmand AI links Dr. Walker to 8 more medical groups.
Does Dr. Marcia Menezes Walker accept Medicare?
Yes. CMS data shows Dr. Walker billed Medicare for 691 services in 2024, and Dr. Walker accepts Medicare assignment.
What is Dr. Marcia Menezes Walker's MIPS score?
Dr. Walker's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
Show 7 more questionsShow fewer questions
How many Medicare patients does Dr. Marcia Menezes Walker see?
CMS counts 547 Medicare patients who saw Dr. Walker in 2024, with an average age of 76.
Is Dr. Marcia Menezes Walker board certified?
Yes. Dr. Walker is board certified in diagnostic radiology by the American Board of Radiology.
What services does Dr. Marcia Menezes Walker bill to Medicare?
In 2024, Dr. Walker's most billed Medicare services were diagnostic imaging (71045), diagnostic imaging (71046) and diagnostic imaging (74177).
Where did Dr. Marcia Menezes Walker go to medical school?
Dr. Walker graduated from Marshall University Joan C. Edwards School of Medicine in 2003.
Has Dr. Marcia Menezes Walker received payments from drug or device companies?
CMS Open Payments shows $136 in general payments to Dr. Walker from 2 companies from 2018 to 2019. The largest total came from Genentech, Inc.
How long has Dr. Marcia Menezes Walker been practicing?
Dr. Walker graduated from medical school in 2003, 23 years ago.
What insurance does Dr. Marcia Menezes Walker accept?
Dr. Walker is in network with 8 carriers, including Aetna, United Healthcare and Aspirus Health Plan. POS plans come from the most carriers, 4. Check the plan with the practice before a visit.
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