Dr. Ako M. Walther, MD
- Medicare services, 2024
- 663
- Medicare patients, 2024
- 216
- Part D claims, 2024
- 164
- MIPS score, 2024
- 98
- Hospital affiliations
- 4
- Practice address
- 250 Bon Air Road, Greenbrae, CA 94904
- Practice phone
- Call (415) 925-7900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Walther's professional email, personal email and mobile number
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Dr. Ako M. Walther is a hospitalist in Greenbrae, California
Dr. Walther practices at MarinHealth Medical Center in Greenbrae, California, part of Marin Healthcare District.
Dr. Walther's NPI, 1588907836, was assigned on April 4, 2013. Dr. Walther holds California license A124467.
- NPI
- 1588907836NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850691171
- NPI enumeration date
- April 4, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 925-7900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ako M. Walther practices at MarinHealth Medical Center in Greenbrae, California
Dr. Walther's primary practice is MarinHealth Medical Center, at 250 Bon Air Road, Greenbrae, CA 94904 in Marin County. The practice phone is (415) 925-7900.
- MarinHealth Medical Center250 Bon Air Road, Greenbrae, CA 94904 · Marin CountyPhone(415) 925-7900
Source: Dmand AI Affiliation Data
Dr. Ako M. Walther is affiliated with 4 sites of care and 6 medical groups
Dr. Walther's primary practice is MarinHealth Medical Center in Greenbrae, California, part of Marin Healthcare District. Dr. Walther is also affiliated with Washington Health. The medical group on file is Vituity. Dmand AI also links Dr. Walther to 2 more hospitals and 5 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ako M. Walther's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walther practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MarinHealth Medical Center | Available with a free account |
| +3 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ako M. Walther is one of 3,186 hospitalists in California
Hospitalist is Dr. Walther's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Walther is licensed in California.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
Hospitalists near Dr. Walther
Counts of hospitalists 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. Ako M. Walther billed Medicare for 663 services in 2024
CMS data shows 663 Medicare services from Dr. Walther across 5 procedure codes in 2024, for 216 Medicare patients. Medicare paid $65,684 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Walther's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8062024: 66318%
Dr. Walther compared with the California median for hospitalists, 2024
- Dr. Walther
- California median
- Medicare services
- 663vs 43054% above
- Medicare patients
- 216vs 2017% above
- Part D claims
- 50vs 6928% below
Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.
Dr. Walther's 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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ako M. Walther treated 216 Medicare patients in 2024, average age 80
CMS counts 216 Medicare patients who saw Dr. Walther in 2024. The largest group is 75 to 84, with 77 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 34% are also on Medicaid. Their average risk score is 2.03, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Walther's median patient age at 77, with 56% women.
Dr. Walther's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Walther's Medicare patients by sex, 2024
- Women13261%
- Men8439%
Chronic conditions among Dr. Walther's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Mood disorders45%
- Alzheimer's and dementia41%
- Anxiety41%
- Depression40%
- Atrial fibrillation38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Walther's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ako M. Walther wrote 164 Medicare Part D claims in 2024
In 2024, Dr. Walther wrote 164 Medicare Part D claims for 79 patients. 87% of them were for generic drugs. CMS names the drug for 50 of them, across 3 drugs with 11 or more claims each, at $11,004 in total drug cost. In 2023, CMS named 41 claims across 3 drugs.
Dr. Walther's Part D claims by kind of drug, 2024
- Generic143 claims87%
- Brand-name21 claims13%
Dr. Walther'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.
Drug classes CMS tracks in Dr. Walther's Part D claims, 2024
- Antibiotics46%75 of 164 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: 412024: 5022%
Drugs named by CMS: 3 in 2024, 3 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. Ako M. Walther scored 98 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 98 out of 100 for Dr. Walther for performance year 2024, reported as part of a group. Dr. Walther accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Walther's MIPS scores, performance year 2024
- 98of 100Final score
- 40of 100Improvement Activities
- 79of 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
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Dr. Ako M. Walther received $104 in industry payments from 2016 to 2017
CMS Open Payments shows 4 general payments to Dr. Walther from 2 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Electromed, Inc. paid the most, $91.
General payments to Dr. Walther by program year, 2016 to 2017
Companies that paid Dr. Walther the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ako M. Walther'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)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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Ako M. Walther
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. Ako M. Walther's NPI number?
Dr. Ako M. Walther's NPI number is 1588907836. It was assigned on April 4, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Ako M. Walther?
Dr. Ako M. Walther is a hospitalist in Greenbrae, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Ako M. Walther practice?
Dr. Walther practices at 250 Bon Air Road, Greenbrae, CA 94904. Dr. Walther's primary practice is MarinHealth Medical Center in Greenbrae, California, part of Marin Healthcare District. Dmand AI also links Dr. Walther to 2 hospitals and 5 medical groups.
What is Dr. Ako M. Walther's office phone number?
The practice phone on file for Dr. Walther is (415) 925-7900.
What is Dr. Ako M. Walther's medical license number?
Dr. Walther holds California license A124467.
Which hospitals is Dr. Ako M. Walther affiliated with?
Dr. Walther practices at MarinHealth Medical Center in Greenbrae, California. Dr. Walther is also affiliated with Washington Health. Dmand AI links Dr. Walther to 2 more hospitals.
What medical group is Dr. Ako M. Walther part of?
Dr. Walther is linked to Vituity. Dmand AI links Dr. Walther to 5 more medical groups.
Does Dr. Ako M. Walther accept Medicare?
Yes. CMS data shows Dr. Walther billed Medicare for 663 services in 2024, and Dr. Walther accepts Medicare assignment.
What is Dr. Ako M. Walther's MIPS score?
Dr. Walther's MIPS final score for performance year 2024 is 98 out of 100, reported as part of a group.
How many Medicare patients does Dr. Ako M. Walther see?
CMS counts 216 Medicare patients who saw Dr. Walther in 2024, with an average age of 80.
Show 4 more questionsShow fewer questions
What services does Dr. Ako M. Walther bill to Medicare?
In 2024, Dr. Walther's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and care management and other visits (99497).
What drugs does Dr. Ako M. Walther prescribe most?
In 2024 Medicare Part D data, Dr. Walther's most prescribed drugs by claims were Cefdinir, Azithromycin and Eliquis.
Has Dr. Ako M. Walther received payments from drug or device companies?
CMS Open Payments shows $104 in general payments to Dr. Walther from 2 companies from 2016 to 2017. The largest total came from Electromed, Inc.
How long has Dr. Ako M. Walther been practicing?
Dr. Walther graduated from medical school in 1999, 27 years ago.
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