Dr. Robert Guy Neumann, MD
- Part D claims, 2026
- 139
- Hospital affiliations
- 1
- Industry payments
- $430
- Medical group
- 1
- State license
- 1
- Practice address
- 7373 West Ln, Stockton, CA 95210
- Practice phone
- Call (209) 476-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Stockton, California
Find Dr. Neumann'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. Robert Guy Neumann is a general surgeon in Stockton, California
Dr. Neumann practices at Permanente Medical Group Inc in Stockton, California.
Dr. Neumann's NPI, 1548317993, was assigned on January 5, 2007. Dr. Neumann graduated from University of Florida College of Medicine in 2002. Dr. Neumann holds Minnesota license 54849.
- NPI
- 1548317993NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254434103
- NPI enumeration date
- January 5, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (209) 476-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert Guy Neumann practices at Permanente Medical Group Inc in Stockton, California
Dr. Neumann's primary practice is Permanente Medical Group Inc, at 7373 West Ln, Stockton, CA 95210 in San Joaquin County. The practice phone is (209) 476-2000.
- Permanente Medical Group Inc7373 West Ln, Stockton, CA 95210 · San Joaquin CountyPhone(209) 476-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Robert Guy Neumann is affiliated with 2 sites of care and 1 medical group
Dr. Neumann's primary practice is Permanente Medical Group Inc in Stockton, California. Dr. Neumann is also affiliated with Massachusetts General Hospital. The medical group on file is The Permanente Medical Group, Inc.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Robert Guy Neumann's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Neumann practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert Guy Neumann is one of 2,926 general surgeons in California
Surgery is Dr. Neumann's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Neumann is licensed in Minnesota.
Specialties and state licenses
- Surgery, MinnesotaPrimary
General surgeons near Dr. Neumann
Counts of general surgeons 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. Robert Guy Neumann's patients have a median age of 53
Across all payers, Dmand AI patient panel data puts Dr. Neumann's median patient age at 53, with 92% women.
Dr. Neumann's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women92%
- Men6%
Source: Dmand AI Patient Panel Data
Dr. Robert Guy Neumann wrote 139 Medicare Part D claims in 2026
In 2026, Dr. Neumann wrote 139 Medicare Part D claims for 41 patients. 98% of them were for generic drugs. CMS names the drug for 85 of them, across 3 drugs with 11 or more claims each, at $573 in total drug cost. In 2023, CMS named 80 claims across 4 drugs.
Dr. Neumann's Part D claims by kind of drug, 2026
- Generic136 claims98%
- Brand-name and other3 claims2%
Dr. Neumann'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. Neumann's Part D claims, 2026
- Opioids27%37 of 139 claims
- Antibiotics11%15 of 139 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: 802024: 856%
Drugs named by CMS: 3 in 2024, 4 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), 2026 data
How Dr. Robert Guy Neumann takes part in Medicare
Dr. Neumann 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. Robert Guy Neumann received $430 in industry payments from 2016 to 2024
CMS Open Payments shows 4 general payments to Dr. Neumann from 4 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $135.
General payments to Dr. Neumann by program year, 2016 to 2024
Companies that paid Dr. Neumann the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert Guy Neumann graduated from University of Florida College of Medicine
Dr. Neumann graduated from University of Florida College of Medicine in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Robert Guy Neumann'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 |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Robert Guy Neumann
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. Robert Guy Neumann's NPI number?
Dr. Robert Guy Neumann's NPI number is 1548317993. It was assigned on January 5, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Guy Neumann?
Dr. Robert Guy Neumann is a general surgeon in Stockton, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Robert Guy Neumann practice?
Dr. Neumann practices at 7373 West Ln, Stockton, CA 95210. Dr. Neumann's primary practice is Permanente Medical Group Inc in Stockton, California.
What is Dr. Robert Guy Neumann's office phone number?
The practice phone on file for Dr. Neumann is (209) 476-2000. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. Robert Guy Neumann's email address?
Dmand AI checks professional and personal email addresses for Dr. Neumann through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. Robert Guy Neumann's medical license number?
Dr. Neumann holds Minnesota license 54849.
Which hospitals is Dr. Robert Guy Neumann affiliated with?
Dr. Neumann is affiliated with Massachusetts General Hospital.
What medical group is Dr. Robert Guy Neumann part of?
Dr. Neumann is linked to The Permanente Medical Group, Inc.
Who does Dr. Robert Guy Neumann practice with?
Dmand AI links 18,480 HCPs to Dr. Neumann's primary medical group, 230 of them general surgeons. A free account lists them, with verified contacts.
Does Dr. Robert Guy Neumann accept Medicare?
Yes. CMS lists Dr. Neumann as accepting Medicare assignment.
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Where did Dr. Robert Guy Neumann go to medical school?
Dr. Neumann graduated from University of Florida College of Medicine in 2002.
What drugs does Dr. Robert Guy Neumann prescribe most?
In 2024 Medicare Part D data, Dr. Neumann's most prescribed drugs by claims were Celecoxib, Ondansetron ODT and Oxycodone-Acetaminophen.
Has Dr. Robert Guy Neumann received payments from drug or device companies?
CMS Open Payments shows $430 in general payments to Dr. Neumann from 4 companies from 2016 to 2024. The largest total came from Allergan Inc.
How long has Dr. Robert Guy Neumann been practicing?
Dr. Neumann graduated from medical school in 2002, 24 years ago.
What EHR does Dr. Robert Guy Neumann's practice use?
Dmand AI tracks the EHR system at Permanente Medical Group Inc and at 1 more affiliated site. The vendor and product are available with a free Dmand AI account.
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