Dr. Gilbert M. Simas, MD
- Medicare services, 2024
- 540
- Medicare patients, 2024
- 173
- Part D claims, 2024
- 2,176
- Hospital affiliations
- 2
- Industry payments
- $12
- Practice address
- 29982 Ivy Glenn Dr, Laguna Niguel, CA 92677
- Practice phone
- Call (949) 309-7903
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Integrative Psychiatry A Medical Corporation
Behavioral health practice · Laguna Niguel, California
Find Dr. Simas' 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. Gilbert M. Simas is a psychiatrist in Laguna Niguel, California
Dr. Simas practices at Integrative Psychiatry A Medical Corporation in Laguna Niguel, California.
Dr. Simas' NPI, 1497802383, was assigned on January 4, 2007. Dr. Simas graduated from St. Matthew's University in 2004. Dr. Simas holds California license C178910.
- NPI
- 1497802383NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274684071
- NPI enumeration date
- January 4, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (949) 309-7903
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gilbert M. Simas practices at Integrative Psychiatry A Medical Corporation in Laguna Niguel, California
Dr. Simas' primary practice is Integrative Psychiatry A Medical Corporation, at 29982 Ivy Glenn Dr, Laguna Niguel, CA 92677. The practice phone is (949) 309-7903.
- Integrative Psychiatry A Medical Corporation29982 Ivy Glenn Dr, Laguna Niguel, CA 92677Phone(949) 309-7903
Source: Dmand AI Affiliation Data
Dr. Gilbert M. Simas is affiliated with 7 sites of care and 18 medical groups
Dr. Simas' primary practice is Integrative Psychiatry A Medical Corporation in Laguna Niguel, California. Dr. Simas is also affiliated with Santa Clara Valley Medical Center. The medical group on file is Integrative Psychiatry. Dmand AI also links Dr. Simas to 1 more hospital, 17 medical groups and 4 group practices and clinics, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gilbert M. Simas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Simas practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Integrative Psychiatry A Medical Corporation | Available with a free account |
| +6 more sites and 17 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Gilbert M. Simas is one of 6,803 psychiatrists in California
Psychiatry is Dr. Simas' primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Simas is board certified in addiction psychiatry by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Simas' licenses on file in 15 states: California, New York, Texas, Washington, Arizona, Iowa, Kentucky, Minnesota, Missouri, Utah, Colorado, Delaware, Oregon, Alaska and Tennessee.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
- New York license
- Texas license
- Addiction psychiatry, Washington
- Arizona license
- Iowa license
- Kentucky license
- Minnesota license
- Missouri license
- Utah license
- Colorado license
- Delaware license
- Oregon license
- Alaska license
- Tennessee license
Clinical focus
Dmand AI lists alcohol use disorders, bipolar disorder, depression, drug use disorders, intellectual and developmental disabilities, psychological distress, psychoses and schizophrenia among the conditions Dr. Simas treats.
Psychiatrists near Dr. Simas
Counts of psychiatrists 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. Gilbert M. Simas billed Medicare for 540 services in 2024
CMS data shows 540 Medicare services from Dr. Simas across 8 procedure codes in 2024, for 173 Medicare patients. Medicare paid $33,411 for them.
Dr. Simas' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8062024: 47142%
- Tests and treatments
- 2023: 962024: 6928%
Where Dr. Simas' Medicare services took place, 2024
- In an office39774%
- In a facility14326%
Dr. Simas compared with the California median for psychiatrists, 2024
- Dr. Simas
- California median
- Medicare services
- 540vs 1194.5 times
- Medicare patients
- 173vs 414.2 times
- Part D claims
- 1,872vs 14413.0 times
Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.
Dr. Simas' 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.
Need commercial claims for Dr. Simas?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Simas and other psychiatrists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gilbert M. Simas treated 173 Medicare patients in 2024, average age 53
CMS counts 173 Medicare patients who saw Dr. Simas in 2024. The largest group is under 65, with 111 patients. 75% of them have anxiety, and 75% have mood disorders. 79% are also on Medicaid. Their average risk score is 1.24, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Simas' median patient age at 38, with 48% women.
Dr. Simas' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Simas' Medicare patients by sex, 2024
- Women8147%
- Men9253%
Chronic conditions among Dr. Simas' Medicare patients, 2024
- Anxiety75%
- Mood disorders75%
- Depression71%
- Schizophrenia and other psychoses66%
- Alcohol and drug use disorders64%
- High blood pressure57%
- Tobacco use54%
- Bipolar disorder45%
Share of Medicare patients with each condition. A patient can have several.
Dr. Simas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 38
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gilbert M. Simas wrote 2,176 Medicare Part D claims in 2024
In 2024, Dr. Simas wrote 2,176 Medicare Part D claims for 321 patients. 96% of them were for generic drugs. CMS names the drug for 1,872 of them, across 48 drugs with 11 or more claims each, at $64,530 in total drug cost. In 2023, CMS named 3,500 claims across 62 drugs.
Dr. Simas' Part D claims by kind of drug, 2024
- Generic2,079 claims96%
- Brand-name and other97 claims4%
Dr. Simas' 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. Simas' Part D claims, 2024
- Antipsychotics, patients 65 and over4%96 of 2,176 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: 3,5002024: 1,87247%
Drugs named by CMS: 48 in 2024, 62 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. Gilbert M. Simas offers telehealth to Medicare patients
Dr. Simas accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Simas as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Gilbert M. Simas received $12 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Simas from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Alkermes, Inc. paid the most, $12.
Companies that paid Dr. Simas the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gilbert M. Simas graduated from St. Matthew's University
Dr. Simas graduated from St. Matthew's University in 2004.
- Medical school
- Board certified in addiction psychiatry
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Dr. Gilbert M. Simas accepts plans from 21 insurance carriers
Dr. Simas is in network with 21 carriers, including Aetna, United Healthcare and Cigna. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Cigna
- Blue Cross Blue Shield of Michigan
- Elevance
- HCSC
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- +13 more carriersWith a free account
Plan types Dr. Simas accepts, by number of carriers
- PPO12
- HMO9
- Medicare9
- POS6
- EPO5
- Medicaid3
Source: Dmand AI Insurance Network Data
Sources for Dr. Gilbert M. Simas'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 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) |
| 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. Gilbert M. Simas
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. Gilbert M. Simas' NPI number?
Dr. Gilbert M. Simas' NPI number is 1497802383. It was assigned on January 4, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Gilbert M. Simas?
Dr. Gilbert M. Simas is a psychiatrist in Laguna Niguel, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Gilbert M. Simas practice?
Dr. Simas practices at 29982 Ivy Glenn Dr, Laguna Niguel, CA 92677. Dr. Simas' primary practice is Integrative Psychiatry A Medical Corporation in Laguna Niguel, California. Dmand AI also links Dr. Simas to 1 hospital, 17 medical groups and 4 group practices and clinics.
What is Dr. Gilbert M. Simas' office phone number?
The practice phone on file for Dr. Simas is (949) 309-7903.
What is Dr. Gilbert M. Simas' medical license number?
Dr. Simas holds California license C178910, one of the licenses on file in 15 states.
Which states has Dr. Gilbert M. Simas been licensed in?
Dmand AI has state licenses on file for Dr. Simas in California (2022 to 2026), New York (2013 to 2027), Texas (2013 to 2027), Washington (2008 to 2027), Arizona (2012 to 2026), Iowa (2013 to 2026), Kentucky (2013 to 2026), Minnesota (2024 to 2026), Missouri (2013 to 2026), Utah (2018 to 2026), Colorado (2022 to 2025), Delaware (2013 to 2025), Oregon (2013 to 2025), Alaska (2020 to 2024) and Tennessee (2004 to 2008).
Which hospitals is Dr. Gilbert M. Simas affiliated with?
Dr. Simas is affiliated with Santa Clara Valley Medical Center. Dmand AI links Dr. Simas to 1 more hospital.
What medical group is Dr. Gilbert M. Simas part of?
Dr. Simas is linked to Integrative Psychiatry. Dmand AI links Dr. Simas to 17 more medical groups.
Does Dr. Gilbert M. Simas accept Medicare?
Yes. CMS data shows Dr. Simas billed Medicare for 540 services in 2024, and Dr. Simas accepts Medicare assignment.
Does Dr. Gilbert M. Simas offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Simas as offering telehealth services.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Gilbert M. Simas see?
CMS counts 173 Medicare patients who saw Dr. Simas in 2024, with an average age of 53.
Is Dr. Gilbert M. Simas board certified?
Yes. Dr. Simas is board certified in addiction psychiatry by the American Board of Psychiatry and Neurology.
What services does Dr. Gilbert M. Simas bill to Medicare?
In 2024, Dr. Simas' most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99231) and office visit, established patient (99213).
Where did Dr. Gilbert M. Simas go to medical school?
Dr. Simas graduated from St. Matthew's University in 2004.
What drugs does Dr. Gilbert M. Simas prescribe most?
In 2024 Medicare Part D data, Dr. Simas' most prescribed drugs by claims were Trazodone HCl, Lorazepam and Olanzapine.
Has Dr. Gilbert M. Simas received payments from drug or device companies?
CMS Open Payments shows $12 in general payments to Dr. Simas from 1 company from 2019 to 2019. The largest total came from Alkermes, Inc.
How long has Dr. Gilbert M. Simas been practicing?
Dr. Simas graduated from medical school in 2004, 22 years ago.
What insurance does Dr. Gilbert M. Simas accept?
Dr. Simas is in network with 21 carriers, including Aetna, United Healthcare and Cigna. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.
Selling to psychiatry practices?
See psychiatrists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card