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Dr. Ryan Thomas Ash, MD, PhD
NPI1023514411PAC ID6406239417
- Medicare services, 2023
- 23
- Medicare patients, 2024
- 17
- Part D claims, 2022
- 117
- Publications
- 10
- MIPS score, 2024
- 89
- Practice address
- 2500 Grant Road, Mountain View, CA 94040
- Practice phone
- Call (650) 940-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ash'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. Ryan Thomas Ash is a psychiatrist in Mountain View, California
Dr. Ash practices at El Camino Health - Mountain View Hospital in Mountain View, California, part of El Camino Healthcare District.
Dr. Ash's NPI, 1023514411, was assigned on April 4, 2018. Dr. Ash graduated from Baylor College Of Medicine in 2016. Dr. Ash's California license number on file is A165366.
NPI and contact details
- NPI
- 1023514411NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6406239417
- NPI enumeration date
- April 4, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (650) 940-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ryan Thomas Ash practices at El Camino Health - Mountain View Hospital in Mountain View, California
Dr. Ash's primary practice is El Camino Health - Mountain View Hospital, at 2500 Grant Road, Mountain View, CA 94040 in Santa Clara County. The practice phone is (650) 940-7000.
- El Camino Health - Mountain View Hospital2500 Grant Road, Mountain View, CA 94040 · Santa Clara CountyPhone(650) 940-7000
Source: Dmand AI Affiliation Data
Dr. Ryan Thomas Ash is affiliated with 5 sites of care and 2 medical groups
Dr. Ash's primary practice is El Camino Health - Mountain View Hospital in Mountain View, California, part of El Camino Healthcare District. The medical group on file is UCSF Medical Group. Dmand AI also links Dr. Ash to 2 more group practices and clinics, 2 hospital outpatient departments and 1 medical group, each named with a free account.
UCSF Medical Group2 group practices and clinicsNames with a free account2 hospital outpatient departmentsNames with a free account1 medical groupName with a free account
See all 7 affiliations for Dr. AshSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ryan Thomas Ash's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ash practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| El Camino Health - Mountain View Hospital | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Ryan Thomas Ash is one of 6,803 psychiatrists in California
Psychiatry is Dr. Ash's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Ash is board certified in psychiatry by the American Board of Psychiatry and Neurology. Dr. Ash has a license on file in California.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
Clinical focus
Dmand AI lists anxiety and depression among the conditions Dr. Ash treats.
Psychiatrists near Dr. Ash
Counts of psychiatrists with a Dmand AI profile, by place and practice. Each opens the list.
6,803psychiatrists in California23psychiatrists in Mountain View10psychiatrists at El Camino Health - Mountain View Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ryan Thomas Ash billed Medicare for 23 services in 2023
CMS data shows 23 Medicare services from Dr. Ash across 1 procedure code in 2023, for 17 Medicare patients. Medicare paid $2,342 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202323
Medicare patients17
Paid by Medicare$2,342
Procedure codes1
Dr. Ash compared with the California median for psychiatrists, 2023
- Dr. Ash
- California median
- Medicare services
- 23vs 11981% below
- Medicare patients
- 17vs 4159% below
- Part D claims
- 117vs 14419% below
Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.
Dr. Ash's most billed Medicare procedure codes, 2023
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. Ash?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ash and other psychiatrists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ryan Thomas Ash treated 17 Medicare patients in 2024, average age 62
CMS counts 17 Medicare patients who saw Dr. Ash in 2024. 75% of them have anxiety, and 75% have depression. Their average risk score is 1.20, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ash's median patient age at 39, with 67% women.
Medicare patients, 202417
Average age62
Average risk score1.20
Chronic conditions among Dr. Ash's Medicare patients, 2024
- Anxiety75%
- Depression75%
- High cholesterol75%
- Mood disorders75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ash's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 39
Patient panel by sex, all payers
- Women67%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ryan Thomas Ash wrote 117 Medicare Part D claims in 2022
In 2022, Dr. Ash wrote 117 Medicare Part D claims. They cover 8 drugs, with $3,345 in total drug cost. In 2021, CMS named 41 claims across 3 drugs.
Part D claims, 2022117
Drugs named by CMS8
Total drug cost$3,345
Dr. Ash's most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 412022: 117185%
Drugs named by CMS: 8 in 2022, 3 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Ryan Thomas Ash scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Ash for performance year 2024, reported as part of a group. Dr. Ash accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Ash's MIPS scores, performance year 2024
- 89of 100Final score
- 87.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 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
For MedTech and pharma teams
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Dr. Ryan Thomas Ash has 10 publications on record
Dmand AI links 10 papers to Dr. Ash, published from 2016 to 2025. 2022 was the busiest year, with 3. The most frequent topics are Disease Models, Animal, Methyl-CpG-Binding Protein 2 and Autistic Disorder. Dr. Ash has published most often in eNeuro. Dr. Ash's most frequent co-authors are Bernhard Suter, MD, Jasdeep Singh Sabharwal, MD and Huda Zoghbi, MD.
Papers10
Years published2016 to 2025
Dr. Ash's papers by year, 2016 to 2025
Topics Dr. Ash writes about most
- Disease Models, Animal
- Methyl-CpG-Binding Protein 2
- Autistic Disorder
- Dendritic Spines
- X-Linked Intellectual Disability
- Evoked Potentials, Visual
- Magnetic Resonance Imaging
- Mice, Inbred C57BL
Dr. Ash's most frequent co-authors
- Bernhard Suter, MD2 shared papers
- Jasdeep Singh Sabharwal, MD1 shared paper
- Huda Zoghbi, MD1 shared paper
Recent publications by Dr. Ash
Evoked Potentials, VisualMagnetic Resonance ImagingMammals
Disease Models, AnimalLearningLocomotion
Autism Spectrum DisorderAutistic DisorderDisease Models, Animal
Autistic DisorderDendritic SpinesDisease Models, Animal
See who Dr. Ash researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ash works with, so you can find a warm path to the right psychiatrists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ryan Thomas Ash graduated from Baylor College Of Medicine
Dr. Ash graduated from Baylor College Of Medicine in 2016.
- Medical school
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Dr. Ryan Thomas Ash accepts plans from 5 insurance carriers
Dr. Ash is in network with 5 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- CMS Medicare
Plan types Dr. Ash accepts, by number of carriers
- Medicare4
- PPO4
- HMO2
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ryan Thomas Ash'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) |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Ryan Thomas Ash
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. Ryan Thomas Ash's NPI number?
Dr. Ryan Thomas Ash's NPI number is 1023514411. It was assigned on April 4, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Ryan Thomas Ash?
Dr. Ryan Thomas Ash is a psychiatrist in Mountain View, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Ryan Thomas Ash practice?
Dr. Ash practices at 2500 Grant Road, Mountain View, CA 94040. Dr. Ash's primary practice is El Camino Health - Mountain View Hospital in Mountain View, California, part of El Camino Healthcare District. Dmand AI also links Dr. Ash to 2 group practices and clinics, 2 hospital outpatient departments and 1 medical group.
What is Dr. Ryan Thomas Ash's office phone number?
The practice phone on file for Dr. Ash is (650) 940-7000.
What is Dr. Ryan Thomas Ash's medical license number?
Dr. Ash's California license number on file is A165366.
Which hospitals is Dr. Ryan Thomas Ash affiliated with?
Dr. Ash practices at El Camino Health - Mountain View Hospital in Mountain View, California.
What medical group is Dr. Ryan Thomas Ash part of?
Dr. Ash is linked to UCSF Medical Group. Dmand AI links Dr. Ash to 1 more medical group.
Does Dr. Ryan Thomas Ash accept Medicare?
Yes. CMS data shows Dr. Ash billed Medicare for 23 services in 2023, and Dr. Ash accepts Medicare assignment.
What is Dr. Ryan Thomas Ash's MIPS score?
Dr. Ash's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
How many Medicare patients does Dr. Ryan Thomas Ash see?
CMS counts 17 Medicare patients who saw Dr. Ash in 2024, with an average age of 62.
Show 8 more questionsShow fewer questions
Is Dr. Ryan Thomas Ash board certified?
Yes. Dr. Ash is board certified in psychiatry by the American Board of Psychiatry and Neurology.
What services does Dr. Ryan Thomas Ash bill to Medicare?
In 2023, Dr. Ash's most billed Medicare services were hospital inpatient care (99233).
Where did Dr. Ryan Thomas Ash go to medical school?
Dr. Ash graduated from Baylor College Of Medicine in 2016.
What drugs does Dr. Ryan Thomas Ash prescribe most?
In 2022 Medicare Part D data, Dr. Ash's most prescribed drugs by claims were Risperidone, Escitalopram Oxalate and Gabapentin.
How long has Dr. Ryan Thomas Ash been practicing?
Dr. Ash graduated from medical school in 2016, 10 years ago.
Does Dr. Ryan Thomas Ash do research?
Dmand AI links 10 publications to Dr. Ash, published from 2016 to 2025.
Who does Dr. Ryan Thomas Ash publish with?
Dr. Ash's most frequent co-authors are Bernhard Suter, MD (2 shared papers), Jasdeep Singh Sabharwal, MD (1 shared paper) and Huda Zoghbi, MD (1 shared paper).
What insurance does Dr. Ryan Thomas Ash accept?
Dr. Ash is in network with 5 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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