Dr. Mary G. De May, MD
- Medicare services, 2024
- 203
- Medicare patients, 2024
- 58
- Part D claims, 2024
- 197
- MIPS score, 2024
- 85
- Hospital affiliations
- 1
- Practice address
- 505 Parnassus Ave, Box 0296, San Francisco, CA 94143
- Practice phone
- Call (415) 353-2733
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. De May'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. Mary G. De May is a geriatric psychiatry physician in San Francisco, California
Dr. De May practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health.
Dr. De May's NPI, 1134163298, was assigned on June 16, 2006. Dr. De May graduated from State University of New York at Stony Brook, School of Medicine in 1985. Dr. De May holds California license G62108.
- NPI
- 1134163298NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8628037652
- NPI enumeration date
- June 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (415) 353-2733
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary G. De May practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California
Dr. De May's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights, at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143 in San Francisco County. The practice phone is (415) 353-2733.
- UCSF Helen Diller Medical Center at Parnassus Heights505 Parnassus Ave, Box 0296, San Francisco, CA 94143 · San Francisco CountyPhone(415) 353-2733
Source: Dmand AI Affiliation Data
Dr. Mary G. De May is affiliated with 4 sites of care and 3 medical groups
Dr. De May's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. The medical group on file is UCSF Pediatrics. Dmand AI also links Dr. De May to 3 more group practices and clinics and 2 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mary G. De May's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. De May practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCSF Helen Diller Medical Center at Parnassus Heights | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mary G. De May is one of 69 geriatric psychiatry physicians in California
Geriatric psychiatry is Dr. De May's primary specialty in the NPI Registry, under taxonomy code 2084P0805X. Dr. De May is board certified in geriatric psychiatry by the American Board of Psychiatry and Neurology. Dmand AI has Dr. De May's licenses on file in 2 states: California and Pennsylvania.
Specialties and state licenses
- Geriatric psychiatry, CaliforniaPrimary
- Pennsylvania license
Geriatric psychiatry physicians near Dr. De May
Counts of geriatric psychiatry 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. Mary G. De May billed Medicare for 203 services in 2024
CMS data shows 203 Medicare services from Dr. De May across 2 procedure codes in 2024, for 58 Medicare patients. Medicare paid $14,438 for them. Every service was in an office.
Dr. De May's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 1162024: 1059%
- Office and hospital visits
- 2023: 1182024: 9817%
Dr. De May compared with the California median for geriatric psychiatry physicians, 2024
- Dr. De May
- California median
- Medicare services
- 203vs 34541% below
- Medicare patients
- 58vs 58Close to median
- Part D claims
- 150vs 24238% below
Medians across 63 geriatric psychiatry physicians in California with Dmand AI profiles that report each measure.
Dr. De May'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. Mary G. De May treated 58 Medicare patients in 2024, average age 78
CMS counts 58 Medicare patients who saw Dr. De May in 2024. The largest group is 75 to 84, with 31 patients. 75% of them have high cholesterol, and 59% have alzheimer's and dementia. Their average risk score is 1.44, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. De May's median patient age at 80, with 46% women.
Dr. De May's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. De May's Medicare patients by sex, 2024
- Women3153%
- Men2747%
Chronic conditions among Dr. De May's Medicare patients, 2024
- High cholesterol75%
- Alzheimer's and dementia59%
- High blood pressure59%
- Mood disorders48%
- Arthritis47%
- Depression45%
- Anxiety34%
- Osteoporosis28%
Share of Medicare patients with each condition. A patient can have several.
Dr. De May's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 80
Patient panel by sex, all payers
- Women46%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mary G. De May wrote 197 Medicare Part D claims in 2024
In 2024, Dr. De May wrote 197 Medicare Part D claims for 24 patients. 89% of them were for generic drugs. CMS names the drug for 150 of them, across 6 drugs with 11 or more claims each, at $6,952 in total drug cost. In 2023, CMS named 210 claims across 8 drugs.
Dr. De May's Part D claims by kind of drug, 2024
- Generic175 claims89%
- Brand-name22 claims11%
Dr. De May'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. De May's Part D claims, 2024
- Antipsychotics, patients 65 and over8%16 of 197 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: 2102024: 15029%
Drugs named by CMS: 6 in 2024, 8 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. Mary G. De May scored 85 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. De May for performance year 2024, reported as part of a group. Dr. De May accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. De May as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. De May's MIPS scores, performance year 2024
- 85of 100Final score
- 81.1of 100Quality
- 40of 100Improvement Activities
- 71of 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. Mary G. De May graduated from State University of New York at Stony Brook, School of Medicine
Dr. De May graduated from State University of New York at Stony Brook, School of Medicine in 1985.
- Medical school
- Board certified in geriatric psychiatry
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Dr. Mary G. De May accepts plans from 3 insurance carriers
Dr. De May is in network with 3 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and CMS Medicare. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- CMS Medicare
Plan types Dr. De May accepts, by number of carriers
- Medicare3
- PPO2
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mary G. De May'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 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) |
| 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) |
| 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. Mary G. De May
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. Mary G. De May's NPI number?
Dr. Mary G. De May's NPI number is 1134163298. It was assigned on June 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary G. De May?
Dr. Mary G. De May is a geriatric psychiatry physician in San Francisco, California. The primary specialty in the NPI Registry is Geriatric Psychiatry Physician (taxonomy code 2084P0805X).
Where does Dr. Mary G. De May practice?
Dr. De May practices at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143. Dr. De May's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. Dmand AI also links Dr. De May to 3 group practices and clinics and 2 medical groups.
What is Dr. Mary G. De May's office phone number?
The practice phone on file for Dr. De May is (415) 353-2733.
What is Dr. Mary G. De May's medical license number?
Dr. De May holds California license G62108, one of the licenses on file in 2 states.
Which states has Dr. Mary G. De May been licensed in?
Dmand AI has state licenses on file for Dr. De May in California (1988 to 2027) and Pennsylvania (1986 to 1994).
Which hospitals is Dr. Mary G. De May affiliated with?
Dr. De May practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California.
What medical group is Dr. Mary G. De May part of?
Dr. De May is linked to UCSF Pediatrics. Dmand AI links Dr. De May to 2 more medical groups.
Does Dr. Mary G. De May accept Medicare?
Yes. CMS data shows Dr. De May billed Medicare for 203 services in 2024, and Dr. De May accepts Medicare assignment.
Does Dr. Mary G. De May offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. De May as offering telehealth services.
Show 8 more questionsShow fewer questions
What is Dr. Mary G. De May's MIPS score?
Dr. De May's MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mary G. De May see?
CMS counts 58 Medicare patients who saw Dr. De May in 2024, with an average age of 78.
Is Dr. Mary G. De May board certified?
Yes. Dr. De May is board certified in geriatric psychiatry by the American Board of Psychiatry and Neurology.
What services does Dr. Mary G. De May bill to Medicare?
In 2024, Dr. De May's most billed Medicare services were medicare service (G2212) and office visit, established patient (99215).
Where did Dr. Mary G. De May go to medical school?
Dr. De May graduated from State University of New York at Stony Brook, School of Medicine in 1985.
What drugs does Dr. Mary G. De May prescribe most?
In 2024 Medicare Part D data, Dr. De May's most prescribed drugs by claims were Escitalopram Oxalate, Donepezil HCl and Rivastigmine.
How long has Dr. Mary G. De May been practicing?
Dr. De May graduated from medical school in 1985, 41 years ago.
What insurance does Dr. Mary G. De May accept?
Dr. De May is in network with 3 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and CMS Medicare. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
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