CommunicationEfficiency, OrganizationalHospitals, Teaching
Dr. Keith Andrew Posley, MD
NPI1861527343PAC ID9537137526
- Medicare services, 2024
- 607
- Medicare patients, 2024
- 221
- Part D claims, 2024
- 169
- Publications
- 2
- Hospital affiliations
- 1
- 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. Posley's professional email, personal email and mobile number
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Dr. Keith Andrew Posley is a hospitalist in Mountain View, California
Dr. Posley practices at El Camino Health - Mountain View Hospital in Mountain View, California, part of El Camino Healthcare District.
Dr. Posley's NPI, 1861527343, was assigned on February 23, 2007. Dr. Posley graduated from University of Southern California Keck School of Medicine in 1993. Dr. Posley holds California license G80235.
NPI and contact details
- NPI
- 1861527343NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537137526
- NPI enumeration date
- February 23, 2007
- 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
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Keith Andrew Posley practices at El Camino Health - Mountain View Hospital in Mountain View, California
Dr. Posley'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. Keith Andrew Posley is affiliated with 4 sites of care and 1 medical group
Dr. Posley'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 Palo Alto Foundation Medical Group. Dmand AI also links Dr. Posley to 2 more hospital outpatient departments and 1 group practice or clinic, each named with a free account.
Palo Alto Foundation Medical Group2 hospital outpatient departmentsNames with a free account1 group practice or clinicName with a free account
See all 5 affiliations for Dr. PosleySources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Keith Andrew Posley's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Posley practices, 4 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 |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Keith Andrew Posley is one of 3,186 hospitalists in California
Hospitalist is Dr. Posley's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Posley is licensed in California.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
Hospitalists near Dr. Posley
Counts of hospitalists with a Dmand AI profile, by place and practice. Each opens the list.
3,186hospitalists in California27hospitalists in Mountain View22hospitalists at El Camino Health - Mountain View Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Keith Andrew Posley billed Medicare for 607 services in 2024
CMS data shows 607 Medicare services from Dr. Posley across 6 procedure codes in 2024, for 221 Medicare patients. Medicare paid $58,636 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024607
Medicare patients221
Paid by Medicare$58,636
Procedure codes6
Dr. Posley's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8342024: 60727%
Dr. Posley compared with the California median for hospitalists, 2024
- Dr. Posley
- California median
- Medicare services
- 607vs 43041% above
- Medicare patients
- 221vs 20110% above
- Part D claims
- 12vs 6983% below
Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.
Dr. Posley'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Posley and other hospitalists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Keith Andrew Posley treated 221 Medicare patients in 2024, average age 81
CMS counts 221 Medicare patients who saw Dr. Posley in 2024. The largest group is 85 and over, with 87 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 15% are also on Medicaid. Their average risk score is 2.14, 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. Posley's median patient age at 79, with 56% women.
Medicare patients, 2024221
Average age81
Average risk score2.14
Also on Medicaid15%
Dr. Posley's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Posley's Medicare patients by sex, 2024
- Women11452%
- Men10748%
Chronic conditions among Dr. Posley's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Chronic kidney disease50%
- Atrial fibrillation47%
- Diabetes45%
- Ischemic heart disease45%
- Heart failure42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Posley's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 79
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. Keith Andrew Posley wrote 169 Medicare Part D claims in 2024
In 2024, Dr. Posley wrote 169 Medicare Part D claims for 81 patients. 91% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $110 in total drug cost. In 2023, CMS named 25 claims across 2 drugs.
Part D claims, 2024169
Drugs named by CMS1
Total drug cost$110
Part D patients81
Dr. Posley's Part D claims by kind of drug, 2024
- Generic154 claims91%
- Brand-name15 claims9%
Dr. Posley'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. Posley's Part D claims, 2024
- Antibiotics19%32 of 169 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: 252024: 1252%
Drugs named by CMS: 1 in 2024, 2 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
How Dr. Keith Andrew Posley takes part in Medicare
Dr. Posley 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. Keith Andrew Posley has 2 publications on record
Dmand AI links 2 papers to Dr. Posley in 2017. Dr. Posley's most frequent co-authors are Nazima Allaudeen, MD, Daniel Z. Fang and Marianne Katherine Yeung, MD.
Papers2
Dr. Posley's most frequent co-authors
- Nazima Allaudeen, MD1 shared paper
- Daniel Z. Fang1 shared paper
- Marianne Katherine Yeung, MD1 shared paper
Recent publications by Dr. Posley
See who Dr. Posley researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Posley works with, so you can find a warm path to the right hospitalists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Keith Andrew Posley graduated from University of Southern California Keck School of Medicine
Dr. Posley graduated from University of Southern California Keck School of Medicine in 1993.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Keith Andrew Posley'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) |
| 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 |
| 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. Keith Andrew Posley
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. Keith Andrew Posley's NPI number?
Dr. Keith Andrew Posley's NPI number is 1861527343. It was assigned on February 23, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Keith Andrew Posley?
Dr. Keith Andrew Posley is a hospitalist in Mountain View, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Keith Andrew Posley practice?
Dr. Posley practices at 2500 Grant Road, Mountain View, CA 94040. Dr. Posley'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. Posley to 2 hospital outpatient departments and 1 group practice or clinic.
What is Dr. Keith Andrew Posley's office phone number?
The practice phone on file for Dr. Posley is (650) 940-7000.
What is Dr. Keith Andrew Posley's medical license number?
Dr. Posley holds California license G80235.
Which hospitals is Dr. Keith Andrew Posley affiliated with?
Dr. Posley practices at El Camino Health - Mountain View Hospital in Mountain View, California.
What medical group is Dr. Keith Andrew Posley part of?
Dr. Posley is linked to Palo Alto Foundation Medical Group.
Does Dr. Keith Andrew Posley accept Medicare?
Yes. CMS data shows Dr. Posley billed Medicare for 607 services in 2024, and Dr. Posley accepts Medicare assignment.
How many Medicare patients does Dr. Keith Andrew Posley see?
CMS counts 221 Medicare patients who saw Dr. Posley in 2024, with an average age of 81.
What services does Dr. Keith Andrew Posley bill to Medicare?
In 2024, Dr. Posley's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99239).
Show 5 more questionsShow fewer questions
Where did Dr. Keith Andrew Posley go to medical school?
Dr. Posley graduated from University of Southern California Keck School of Medicine in 1993.
What drugs does Dr. Keith Andrew Posley prescribe most?
In 2024 Medicare Part D data, Dr. Posley's most prescribed drugs by claims were Amoxicillin-Clavulanate Potass.
How long has Dr. Keith Andrew Posley been practicing?
Dr. Posley graduated from medical school in 1993, 33 years ago.
Does Dr. Keith Andrew Posley do research?
Dmand AI links 2 publications to Dr. Posley.
Who does Dr. Keith Andrew Posley publish with?
Dr. Posley's most frequent co-authors are Nazima Allaudeen, MD (1 shared paper), Daniel Z. Fang (1 shared paper) and Marianne Katherine Yeung, MD (1 shared paper).
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