Dr. Marisol C. Timtiman, MD
- Part D claims, 2024
- 247
- Hospital affiliations
- 1
- Industry payments
- $21
- Medical group
- 1
- Insurance carriers
- 2
- Practice address
- 1425 S Main Street, Walnut Creek, CA 94596
- Practice phone
- Call (925) 295-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Timtiman's professional email, personal email and mobile number
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Dr. Marisol C. Timtiman is a psychiatrist in Walnut Creek, California
Dr. Timtiman practices at Walnut Creek Medical Center in Walnut Creek, California, part of Kaiser Permanente.
Dr. Timtiman's NPI, 1821205741, was assigned on May 17, 2007. Dr. Timtiman graduated from St. Luke's College of Medicine in 2000. Dr. Timtiman's Michigan license number on file is 4301091347.
- NPI
- 1821205741NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7214091453
- NPI enumeration date
- May 17, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (925) 295-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marisol C. Timtiman practices at Walnut Creek Medical Center in Walnut Creek, California
Dr. Timtiman's primary practice is Walnut Creek Medical Center, at 1425 S Main Street, Walnut Creek, CA 94596 in Contra Costa County. The practice phone is (925) 295-4000.
- Walnut Creek Medical Center1425 S Main Street, Walnut Creek, CA 94596 · Contra Costa CountyPhone(925) 295-4000
Source: Dmand AI Affiliation Data
Dr. Marisol C. Timtiman is affiliated with 1 site of care and 1 medical group
Dr. Timtiman's primary practice is Walnut Creek Medical Center in Walnut Creek, California, part of Kaiser Permanente. The medical group on file is The Permanente Medical Group, Inc.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marisol C. Timtiman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Timtiman practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Walnut Creek Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marisol C. Timtiman is one of 6,803 psychiatrists in California
Psychiatry is Dr. Timtiman's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Timtiman is board certified in brain injury medicine by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Timtiman's licenses on file in 3 states: Michigan, California and Connecticut.
Specialties and state licenses
- Psychiatry, MichiganPrimary
- California license
- Connecticut license
Psychiatrists near Dr. Timtiman
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. Marisol C. Timtiman's patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Dr. Timtiman's median patient age at 72, with 73% women.
Dr. Timtiman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women73%
- Men25%
Source: Dmand AI Patient Panel Data
Dr. Marisol C. Timtiman wrote 247 Medicare Part D claims in 2024
In 2024, Dr. Timtiman wrote 247 Medicare Part D claims for 80 patients. 98% of them were for generic drugs. CMS names the drug for 154 of them, across 8 drugs with 11 or more claims each, at $2,051 in total drug cost. In 2016, CMS named 157 claims across 8 drugs.
Dr. Timtiman's Part D claims by kind of drug, 2024
- Generic243 claims98%
- Brand-name and other4 claims2%
Dr. Timtiman'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.
Part D claims for drugs CMS names, 2016 to 2024
- 2016
- 2024
- Claims for drugs CMS names
- 2016: 1572024: 1542%
Drugs named by CMS: 8 in 2024, 8 in 2016.
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
How Dr. Marisol C. Timtiman takes part in Medicare
Dr. Timtiman accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Marisol C. Timtiman received $21 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Timtiman from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. ViiV Healthcare Company paid the most, $21.
Companies that paid Dr. Timtiman the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marisol C. Timtiman graduated from St. Luke's College of Medicine
Dr. Timtiman graduated from St. Luke's College of Medicine in 2000.
- Medical school
- Board certified in brain injury medicine
- Board certified in geriatric psychiatry
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Dr. Marisol C. Timtiman accepts plans from 2 insurance carriers
Dr. Timtiman is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Timtiman accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Marisol C. Timtiman'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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. Marisol C. Timtiman
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. Marisol C. Timtiman's NPI number?
Dr. Marisol C. Timtiman's NPI number is 1821205741. It was assigned on May 17, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Marisol C. Timtiman?
Dr. Marisol C. Timtiman is a psychiatrist in Walnut Creek, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Marisol C. Timtiman practice?
Dr. Timtiman practices at 1425 S Main Street, Walnut Creek, CA 94596. Dr. Timtiman's primary practice is Walnut Creek Medical Center in Walnut Creek, California, part of Kaiser Permanente.
What is Dr. Marisol C. Timtiman's office phone number?
The practice phone on file for Dr. Timtiman is (925) 295-4000.
What is Dr. Marisol C. Timtiman's medical license number?
Dr. Timtiman's Michigan license number on file is 4301091347, one of the licenses on file in 3 states.
Which states has Dr. Marisol C. Timtiman been licensed in?
Dmand AI has state licenses on file for Dr. Timtiman in Michigan (2007 to 2012), California (2011 to 2026) and Connecticut (2007 to 2008).
Which hospitals is Dr. Marisol C. Timtiman affiliated with?
Dr. Timtiman practices at Walnut Creek Medical Center in Walnut Creek, California.
What medical group is Dr. Marisol C. Timtiman part of?
Dr. Timtiman is linked to The Permanente Medical Group, Inc.
Does Dr. Marisol C. Timtiman accept Medicare?
Yes. CMS lists Dr. Timtiman as accepting Medicare assignment.
Is Dr. Marisol C. Timtiman board certified?
Yes. Dr. Timtiman is board certified in brain injury medicine by the American Board of Psychiatry and Neurology.
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Where did Dr. Marisol C. Timtiman go to medical school?
Dr. Timtiman graduated from St. Luke's College of Medicine in 2000.
What drugs does Dr. Marisol C. Timtiman prescribe most?
In 2024 Medicare Part D data, Dr. Timtiman's most prescribed drugs by claims were Lorazepam, Sertraline HCl and Escitalopram Oxalate.
Has Dr. Marisol C. Timtiman received payments from drug or device companies?
CMS Open Payments shows $21 in general payments to Dr. Timtiman from 1 company from 2017 to 2017. The largest total came from ViiV Healthcare Company.
How long has Dr. Marisol C. Timtiman been practicing?
Dr. Timtiman graduated from medical school in 2000, 26 years ago.
What insurance does Dr. Marisol C. Timtiman accept?
Dr. Timtiman is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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