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Dr. Gregory A. Maynard, MD
NPI1265460331
- Medicare services, 2017
- 43
- Part D claims, 2020
- 12
- Publications
- 49
- Industry payments
- $11,134
- Insurance carriers
- 4
- Practice address
- 200 W Arbor Dr, San Diego, CA 92103-9000
- Practice phone
- Call (619) 543-6222
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Maynard'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. Gregory A. Maynard is an internist in San Diego, California
Dr. Maynard practices in San Diego, California.
Dr. Maynard's NPI, 1265460331, was assigned on June 29, 2006. Dr. Maynard graduated from University of Illinois College of Medicine - Chicago in 1983. Dr. Maynard holds California license G86750.
NPI and contact details
- NPI
- 1265460331NPI Registry (opens in a new tab)
- NPI enumeration date
- June 29, 2006
- NPI status
- Active
- Practice phone
- (619) 543-6222
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Gregory A. Maynard's practice address is in San Diego, California
Dr. Maynard's practice address in the NPI Registry is 200 W Arbor Dr, San Diego, CA 92103-9000. The practice phone is (619) 543-6222.
- NPI Registry address200 W Arbor Dr, San Diego, CA 92103-9000Phone(619) 543-6222
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Gregory A. Maynard's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maynard practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Maynard's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory A. Maynard is one of 16,751 internists in California
Internal medicine is Dr. Maynard's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Maynard is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Maynard's licenses on file in 2 states: California and Arizona.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Arizona license
Internists near Dr. Maynard
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. Gregory A. Maynard billed Medicare for 43 services in 2017
CMS data shows 43 Medicare services from Dr. Maynard across 1 procedure code in 2017. Medicare paid $3,640 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 201743
Paid by Medicare$3,640
Procedure codes1
Dr. Maynard's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Office and hospital visits
- 2016: 672017: 4336%
Dr. Maynard compared with the California median for internists, 2017
- Dr. Maynard
- California median
- Medicare services
- 43vs 36188% below
- Part D claims
- 12vs 42197% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Maynard's most billed Medicare procedure codes, 2017
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. Maynard?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Maynard and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory A. Maynard wrote 12 Medicare Part D claims in 2020
In 2020, Dr. Maynard wrote 12 Medicare Part D claims. They cover 1 drug, with $3,423 in total drug cost.
Part D claims, 202012
Drugs named by CMS1
Total drug cost$3,423
Dr. Maynard's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Gregory A. Maynard has 49 publications on record
Dmand AI links 49 papers to Dr. Maynard, published from 2012 to 2023. 2018 was the busiest year, with 3. The most frequent topics are Venous Thromboembolism, Blood Glucose and Quality Improvement. Dr. Maynard has published most often in J Hosp Med. Dr. Maynard's most frequent co-authors are Gregory W. Albers, MD, Jonathan Lee Halperin, MD and Diana Jane Childers, MD.
Papers49
Years published2012 to 2023
Dr. Maynard's papers by year, 2012 to 2023
Topics Dr. Maynard writes about most
- Venous Thromboembolism
- Blood Glucose
- Quality Improvement
- Hyperglycemia
- Inpatients
- Insulin
- Hospitals
- Patient Discharge
Dr. Maynard's most frequent co-authors
- Gregory W. Albers, MD4 shared papers
- Jonathan Lee Halperin, MD4 shared papers
- Diana Jane Childers, MD2 shared papers
Recent publications by Dr. Maynard
J Thromb Haemost
AftercareAnticoagulantsPatient Discharge
N Engl J Med
AftercareDouble-Blind MethodFactor Xa Inhibitors
CurriculumInternship and ResidencyMentors
ArizonaCaliforniaHealth Personnel
See who Dr. Maynard researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Maynard 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. Gregory A. Maynard received $11,134 in industry payments from 2016 to 2022
CMS Open Payments shows 21 general payments to Dr. Maynard from 3 drug and device companies from 2016 to 2022. Consulting fees make up the largest share, 38% of the total. Janssen Research & Development, LLC paid the most, $6,922.
General payments to Dr. Maynard by program year, 2016 to 2022
General payments to Dr. Maynard by kind, 2016 to 2022
$11.1Kin total
- Consulting fees$4,20038%
- Speaker and faculty fees$4,16137%
- Travel and lodging$1,99218%
- Food and beverage$7827%
Companies that paid Dr. Maynard the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory A. Maynard has 16 awards and honors on record
Dmand AI lists 16 awards for Dr. Maynard, most recently CDC Healthcare-Associated VTE Prevention Challenge Champion in 2016.
Awards and honors for Dr. Maynard
- 2016
- CDC Healthcare-Associated VTE Prevention Challenge Champion
- �Master in Hospital Medicine� (MHM) designation
- 2012
- John M. Eisenberg Patient Safety and Quality Award
- 2011
- Leadership and Innovation in Patient-Centered Systems Award
- 2010
- North American Thrombosis Forum � DVTeam Care Award
- 2009
- Safety Net Award
Source: Dmand AI Professional Profile Data
Dr. Gregory A. Maynard graduated from University of Illinois College of Medicine - Chicago
Dr. Maynard graduated from University of Illinois College of Medicine - Chicago in 1983. Dr. Maynard is a member of ACP and SHM.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Gregory A. Maynard accepts plans from 4 insurance carriers
Dr. Maynard is in network with 4 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
Plan types Dr. Maynard accepts, by number of carriers
- Medicare4
- PPO4
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Gregory A. Maynard'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice 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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Gregory A. Maynard
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. Gregory A. Maynard's NPI number?
Dr. Gregory A. Maynard's NPI number is 1265460331. It was assigned on June 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory A. Maynard?
Dr. Gregory A. Maynard is an internist in San Diego, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Gregory A. Maynard practice?
Dr. Maynard practices at 200 W Arbor Dr, San Diego, CA 92103-9000.
What is Dr. Gregory A. Maynard's office phone number?
The practice phone on file for Dr. Maynard is (619) 543-6222.
What is Dr. Gregory A. Maynard's medical license number?
Dr. Maynard holds California license G86750, one of the licenses on file in 2 states.
Which states has Dr. Gregory A. Maynard been licensed in?
Dmand AI has state licenses on file for Dr. Maynard in California (2002 to 2026) and Arizona (1985 to 2006).
Does Dr. Gregory A. Maynard accept Medicare?
Yes. CMS data shows Dr. Maynard billed Medicare for 43 services in 2017.
Is Dr. Gregory A. Maynard board certified?
Yes. Dr. Maynard is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Gregory A. Maynard bill to Medicare?
In 2017, Dr. Maynard's most billed Medicare services were hospital inpatient care (99233).
Where did Dr. Gregory A. Maynard go to medical school?
Dr. Maynard graduated from University of Illinois College of Medicine - Chicago in 1983.
Show 6 more questionsShow fewer questions
What drugs does Dr. Gregory A. Maynard prescribe most?
In 2020 Medicare Part D data, Dr. Maynard's most prescribed drugs by claims were Lantus.
Has Dr. Gregory A. Maynard received payments from drug or device companies?
CMS Open Payments shows $11,134 in general payments to Dr. Maynard from 3 companies from 2016 to 2022. The largest total came from Janssen Research & Development, LLC.
How long has Dr. Gregory A. Maynard been practicing?
Dr. Maynard graduated from medical school in 1983, 43 years ago.
Does Dr. Gregory A. Maynard do research?
Dmand AI links 49 publications to Dr. Maynard, published from 2012 to 2023.
Who does Dr. Gregory A. Maynard publish with?
Dr. Maynard's most frequent co-authors are Gregory W. Albers, MD (4 shared papers), Jonathan Lee Halperin, MD (4 shared papers) and Diana Jane Childers, MD (2 shared papers).
What insurance does Dr. Gregory A. Maynard accept?
Dr. Maynard is in network with 4 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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