Physician Profile
Mary G. De May, M.D.
Unclaimed ProfileAbout Dr. De May
Mary G. De May, M.D. practices psychiatry in San Francisco, CA. Mary is a 1985 graduate of State University of New York at Stony Brook, School of Medicine. Mary is also listed as specializing in geriatric psychiatry. According to Medicare claims data, Mary cared for 78 Medicare patients across 203 services. The services billed most often include prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or and established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more. The provider's National Provider Identifier (NPI) is 1134163298.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (415) 476-6880
- Email not available
Practice Locations
350 PARNASSUS AVE SUITE 706
San Francisco, CA 94143
Conditions Commonly Evaluated or Treated
Within Psychiatry generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Anxiety, trauma, and obsessive-compulsive
Mood disorders
Psychotic disorders
Substance-related and addictive
Addiction & Substance Use
Cognitive and adjustment
Eating Disorders
Eating, sleep, and somatic
Mood & Depression
Neurodevelopmental and behavioral
Personality and dissociative
Sleep & Wakefulness
Procedures & services
Most searched procedures
- Anxiety and depression treatment
- Cognitive behavioral therapy
- Medication management
- Psychiatric evaluation
- Telepsychiatry
Assessment
Addiction care
Addiction Medicine
Assessments
Brain stimulation
Consultations
Diagnostics
Inpatient care
Interventional psychiatry
Psychotherapy
Sleep Medicine
Specialized care
Therapy
Therapy and care
Procedures Most Often Billed to Medicare
203 services · 78 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | Billing code | G2212 |
105 | Too few peers to compare |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
98 | More often than most peers in Psychiatry |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other psychiatrists at this location 3
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 24 related providers in 3 groups
Other psychiatrists in San Francisco 8
Same specialty, same city.
Trained at State University of New York at Stony Brook, School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1985 at State University of New York at Stony Brook, School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Mary G. De May?
Mary G. De May is a psychiatrist in San Francisco, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Psychiatry”.
NPI registry
What is Mary G. De May's address?
Mary G. De May is listed at 350 Parnassus Ave Suite 706, San Francisco, CA 94143. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Mary G. De May?
The number on file is (415) 476-6880. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mary G. De May's NPI number?
Mary G. De May's National Provider Identifier is 1134163298. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Mary G. De May train?
Mary G. De May attended State University of New York at Stony Brook, School of Medicine, graduating in 1985. This comes from the CMS National Downloadable File.
CMS public data
How long has Mary G. De May been practicing?
Mary G. De May has 41 years experience. Calculated from a graduation year of 1985, reported in the CMS National Downloadable File.
CMS public data
What procedures does Mary G. De May perform?
According to Medicare billing data, Mary G. De May the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Mary G. De May confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mary G. De May. If this is you, claiming it is free.
Guide.md
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