Walter Gregory Shakespeare, D.O.
Critical Care Medicine (Internal Medicine) Physician · Sacramento, CA
Walter Gregory Shakespeare, D.O. is a critical care medicine (internal medicine) physician with a practice address in Sacramento, California, and NPI 1861705444, issued on Jul 23, 2010. Check the license (California 20A15575, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Walter Gregory Shakespeare
- Credential
- D.O.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 20A15575 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2025 Morse Ave, Sacramento, CA 95825
- Phone
- (916) 973-5000
- Enumerated
- Jul 23, 2010
- Record last updated
- Apr 15, 2026
- Medicare enrollment
- Enrolled (PECOS I20171103000743); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 723 in California → Look up another NPI →
Also registered at 2025 Morse Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jesse Adams, MDHematology & Oncology Physician1851479554
- Qudeer Ahmad, BS RRTCritical Care Registered Respiratory Therapist1649742594
- Paul Akins, MDNeurology Physician1952489528
Verify Walter Gregory Shakespeare in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A15575Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% more Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
1,063 Medicare Part D claims for 190 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 40% of claims.
Most prescribed
- Prednisone131 claims
- Albuterol Sulfate Hfa113 claims
- Spiriva Respimat112 claims
- Wixela Inhub105 claims
- Stiolto Respimat86 claims
- Alvesco70 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncRoseville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Walter Gregory Shakespeare among 723 critical care medicine (internal medicine) physician records in California
Walter Gregory Shakespeare, D.O. is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 64% of them.
- NPI issued2010 · 64% of these records are older, 32% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2010 · median 2005 among the 559 with a school on file
- Record last updated2026 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California.
All 723 in California → Every provider in Sacramento → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Gehan Devendra, MDSacramento, CA 958251215015995
- Harjinder Gogia, MDSacramento, CA 958251588742290
- David Herbert, MDSacramento, CA 958251396823001
- John Lutch, MDSacramento, CA 958251043398746
- Darshan Sonik, MDSacramento, CA 958251154409829
- Sabrina Chen, MDSacramento, CA 958231043382898
- Norman Chow, MDSacramento, CA 958231558449272
- Yuen Kwan, MDSacramento, CA 958231720150568
Common questions
What is Walter Gregory Shakespeare, D.O.'s NPI number?
Walter Gregory Shakespeare, D.O.'s National Provider Identifier (NPI) is 1861705444, issued on Jul 23, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Walter Gregory Shakespeare, D.O. located?
The NPPES record lists a practice address at 2025 Morse Ave, Sacramento, CA, 95825. Phone: (916) 973-5000. Providers update this record themselves, so call before visiting.
How can I verify Walter Gregory Shakespeare, D.O.'s license?
NPPES lists California license number 20A15575, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Walter Gregory Shakespeare, D.O. prescribe under Medicare Part D?
In 2024, Walter Gregory Shakespeare, D.O. had 1,063 Medicare Part D claims for 190 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.