Dr. Walter Gregory Shakespeare, DO
- Medicare services, 2024
- 27
- Medicare patients, 2024
- 26
- Part D claims, 2024
- 1,063
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 2025 Morse Avenue, Sacramento, CA 95825
- Practice phone
- Call (916) 973-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Shakespeare'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. Walter Gregory Shakespeare is an internist in Sacramento, California
Dr. Shakespeare practices at Sacramento Medical Center in Sacramento, California, part of Kaiser Permanente.
Dr. Shakespeare's NPI, 1861705444, was assigned on July 23, 2010. Dr. Shakespeare graduated from Chicago College of Osteopathic Medicine at Midwestern University in 2010. Dr. Shakespeare holds Pennsylvania license OT013798.
- NPI
- 1861705444NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5092959718
- NPI enumeration date
- July 23, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (916) 973-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Walter Gregory Shakespeare practices at Sacramento Medical Center in Sacramento, California
Dr. Shakespeare's primary practice is Sacramento Medical Center, at 2025 Morse Avenue, Sacramento, CA 95825 in Sacramento County. The practice phone is (916) 973-5000.
- Sacramento Medical Center2025 Morse Avenue, Sacramento, CA 95825 · Sacramento CountyPhone(916) 973-5000
Source: Dmand AI Affiliation Data
Dr. Walter Gregory Shakespeare is affiliated with 1 site of care and 1 medical group
Dr. Shakespeare's primary practice is Sacramento Medical Center in Sacramento, 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. Walter Gregory Shakespeare's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Shakespeare practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sacramento Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Walter Gregory Shakespeare is one of 16,751 internists in California
Internal medicine is Dr. Shakespeare's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Shakespeare is board certified in critical care medicine by the American Board of Internal Medicine. Dr. Shakespeare is licensed in Pennsylvania.
Specialties and state licenses
- Internal medicine, PennsylvaniaPrimary
Internists near Dr. Shakespeare
Counts of internists 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. Walter Gregory Shakespeare billed Medicare for 27 services in 2024
CMS data shows 27 Medicare services from Dr. Shakespeare across 1 procedure code in 2024, for 26 Medicare patients. Medicare paid $1,717 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Shakespeare's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 242024: 2713%
Dr. Shakespeare compared with the California median for internists, 2024
- Dr. Shakespeare
- California median
- Medicare services
- 27vs 36193% below
- Medicare patients
- 26vs 15183% below
- Part D claims
- 982vs 4212.3 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Shakespeare'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.
Need commercial claims for Dr. Shakespeare?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Shakespeare and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Walter Gregory Shakespeare treated 26 Medicare patients in 2024, average age 71
CMS counts 26 Medicare patients who saw Dr. Shakespeare in 2024. The largest group is 65 to 74, with 12 patients. 75% of them have high blood pressure, and 58% have chronic kidney disease. Their average risk score is 2.35, 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. Shakespeare's median patient age at 64, with 52% women.
Dr. Shakespeare's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Shakespeare's Medicare patients, 2024
- High blood pressure75%
- Chronic kidney disease58%
- High cholesterol58%
- Arthritis46%
- Heart failure46%
- Ischemic heart disease46%
- Atrial fibrillation42%
- COPD42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Shakespeare's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Walter Gregory Shakespeare wrote 1,063 Medicare Part D claims in 2024
In 2024, Dr. Shakespeare wrote 1,063 Medicare Part D claims for 190 patients. 60% of them were for generic drugs. CMS names the drug for 982 of them, across 19 drugs with 11 or more claims each, at $214,257 in total drug cost. In 2023, CMS named 1,208 claims across 21 drugs.
Dr. Shakespeare's Part D claims by kind of drug, 2024
- Generic643 claims60%
- Brand-name420 claims40%
Dr. Shakespeare'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. Shakespeare's Part D claims, 2024
- Antibiotics8%89 of 1,063 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: 1,2082024: 98219%
Drugs named by CMS: 19 in 2024, 21 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. Walter Gregory Shakespeare takes part in Medicare
Dr. Shakespeare 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. Walter Gregory Shakespeare has 2 publications on record
Dmand AI links 2 papers to Dr. Shakespeare, published from 2013 to 2015. The most frequent topics are Critical Care. Dr. Shakespeare's most frequent co-authors are Niusha Damaghi, MD and Larry Ladi, MD.
Topics Dr. Shakespeare writes about most
- Critical Care
Dr. Shakespeare's most frequent co-authors
Recent publications by Dr. Shakespeare
J Intensive Care Med
See who Dr. Shakespeare researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Shakespeare works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Walter Gregory Shakespeare received $18 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Shakespeare from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Grifols Shared Services North America, Inc. paid the most, $18.
Companies that paid Dr. Shakespeare 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. Walter Gregory Shakespeare graduated from Chicago College of Osteopathic Medicine at Midwestern University
Dr. Shakespeare graduated from Chicago College of Osteopathic Medicine at Midwestern University in 2010. Dr. Shakespeare is a member of ACCP.
- Medical school
- Board certified in critical care medicine
- Board certified in internal medicine
- Board certified in pulmonary disease
- Board certified in 2017 - 2025
- Board certified in 2010 - 2014
- Board certified in 2016 - 2019
Source: Dmand AI Professional Profile Data
Dr. Walter Gregory Shakespeare accepts plans from 2 insurance carriers
Dr. Shakespeare 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. Shakespeare accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Walter Gregory Shakespeare'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 |
| 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. Walter Gregory Shakespeare
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. Walter Gregory Shakespeare's NPI number?
Dr. Walter Gregory Shakespeare's NPI number is 1861705444. It was assigned on July 23, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Walter Gregory Shakespeare?
Dr. Walter Gregory Shakespeare is an internist in Sacramento, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Walter Gregory Shakespeare practice?
Dr. Shakespeare practices at 2025 Morse Avenue, Sacramento, CA 95825. Dr. Shakespeare's primary practice is Sacramento Medical Center in Sacramento, California, part of Kaiser Permanente.
What is Dr. Walter Gregory Shakespeare's office phone number?
The practice phone on file for Dr. Shakespeare is (916) 973-5000.
What is Dr. Walter Gregory Shakespeare's medical license number?
Dr. Shakespeare holds Pennsylvania license OT013798.
Which hospitals is Dr. Walter Gregory Shakespeare affiliated with?
Dr. Shakespeare practices at Sacramento Medical Center in Sacramento, California.
What medical group is Dr. Walter Gregory Shakespeare part of?
Dr. Shakespeare is linked to The Permanente Medical Group, Inc.
Does Dr. Walter Gregory Shakespeare accept Medicare?
Yes. CMS data shows Dr. Shakespeare billed Medicare for 27 services in 2024, and Dr. Shakespeare accepts Medicare assignment.
How many Medicare patients does Dr. Walter Gregory Shakespeare see?
CMS counts 26 Medicare patients who saw Dr. Shakespeare in 2024, with an average age of 71.
Is Dr. Walter Gregory Shakespeare board certified?
Yes. Dr. Shakespeare is board certified in critical care medicine by the American Board of Internal Medicine.
Show 8 more questionsShow fewer questions
What services does Dr. Walter Gregory Shakespeare bill to Medicare?
In 2024, Dr. Shakespeare's most billed Medicare services were hospital inpatient care (99232).
Where did Dr. Walter Gregory Shakespeare go to medical school?
Dr. Shakespeare graduated from Chicago College of Osteopathic Medicine at Midwestern University in 2010.
What drugs does Dr. Walter Gregory Shakespeare prescribe most?
In 2024 Medicare Part D data, Dr. Shakespeare's most prescribed drugs by claims were Prednisone, Albuterol Sulfate Hfa and Spiriva Respimat.
Has Dr. Walter Gregory Shakespeare received payments from drug or device companies?
CMS Open Payments shows $18 in general payments to Dr. Shakespeare from 1 company from 2019 to 2019. The largest total came from Grifols Shared Services North America, Inc.
How long has Dr. Walter Gregory Shakespeare been practicing?
Dr. Shakespeare graduated from medical school in 2010, 16 years ago.
Does Dr. Walter Gregory Shakespeare do research?
Dmand AI links 2 publications to Dr. Shakespeare, published from 2013 to 2015.
Who does Dr. Walter Gregory Shakespeare publish with?
Dr. Shakespeare's most frequent co-authors are Niusha Damaghi, MD (1 shared paper) and Larry Ladi, MD (1 shared paper).
What insurance does Dr. Walter Gregory Shakespeare accept?
Dr. Shakespeare 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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