Provider Profile
Kiefer Greenspan
Unclaimed ProfileAbout Kiefer Greenspan
Based in Irvine, CA, Kiefer Greenspan is listed in the NPI registry under psychiatry. Kiefer graduated from University of Pittsburgh School of Medicine in 2018. According to Medicare claims data, Kiefer cared for 433 Medicare patients across 2,720 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, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more. NPI 1629573464 identifies this record in the national registry.
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
- (949) 230-3543
- Email not available
Practice Locations
2646 DUPONT DRIVE SUITE 60 #203
Irvine, CA 92612
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
2,720 services · 433 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychotherapy with evaluation and management visit, 30 minutes | Treatment | 90833 |
304 | More often than most peers in Psychiatry |
| Psychotherapy with evaluation and management visit, 45 minutes | Treatment | 90836 |
180 | More often than most peers in Psychiatry |
| Psychiatric services complicated by communication factor | Treatment | 90785 |
37 | As often as other peers in Psychiatry |
| 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 |
962 | More than most peers in Psychiatry |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
848 | More than most peers in Psychiatry |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
357 | More than most peers in Psychiatry |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
32 | 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.
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.
Other psychiatrists in Irvine 8
Same specialty, same city.
Also performs Psychotherapy with evaluation and management visit, 30 minutes 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Kiefer Greenspan?
Kiefer Greenspan is a psychiatrist in Irvine, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Psychiatry”.
NPI registry
What is Kiefer Greenspan's address?
Kiefer Greenspan is listed at 2646 Dupont Drive Suite 60 #203, Irvine, CA 92612. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Kiefer Greenspan?
The number on file is (949) 230-3543. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Kiefer Greenspan's NPI number?
Kiefer Greenspan's National Provider Identifier is 1629573464. 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 Kiefer Greenspan train?
Kiefer Greenspan attended University of Pittsburgh School of Medicine, graduating in 2018. This comes from the CMS National Downloadable File.
CMS public data
How long has Kiefer Greenspan been practicing?
Kiefer Greenspan has 8 years experience. Calculated from a graduation year of 2018, reported in the CMS National Downloadable File.
CMS public data
What procedures does Kiefer Greenspan perform?
According to Medicare billing data, Kiefer Greenspan provides treatments such as psychotherapy with evaluation and management visit, 30 minutes and psychotherapy with evaluation and management visit, 45 minutes, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Kiefer Greenspan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Kiefer Greenspan. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.