Dr. Andrew Nimmich, MD
- Medicare services, 2024
- 12,874
- Medicare patients, 2024
- 111
- Part D claims, 2024
- 246
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 2637 Shadelands Drive, Walnut Creek, CA 94598
- Practice phone
- Call (925) 329-3710
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
BASS Imaging Center - Walnut Creek
Mammography / Breast Imaging Center · Walnut Creek, California
Find Dr. Nimmich'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. Andrew Nimmich is a vascular surgeon in Walnut Creek, California
Dr. Nimmich practices at BASS Imaging Center - Walnut Creek in Walnut Creek, California.
Dr. Nimmich's NPI, 1396238945, was assigned on June 8, 2018. Dr. Nimmich graduated from Boston University School Of Medicine in 2018. Dr. Nimmich holds California license A198961.
- NPI
- 1396238945NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6103294764
- NPI enumeration date
- June 8, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (925) 329-3710
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Andrew Nimmich practices at BASS Imaging Center - Walnut Creek in Walnut Creek, California
Dr. Nimmich's primary practice is BASS Imaging Center - Walnut Creek, at 2637 Shadelands Drive, Walnut Creek, CA 94598. The practice phone is (925) 329-3710.
- BASS Imaging Center - Walnut Creek2637 Shadelands Drive, Walnut Creek, CA 94598Phone(925) 329-3710
Source: Dmand AI Affiliation Data
Dr. Andrew Nimmich is affiliated with 2 sites of care and 1 medical group
Dr. Nimmich's primary practice is BASS Imaging Center - Walnut Creek in Walnut Creek, California. Dr. Nimmich is also affiliated with Providence Queen of the Valley Medical Center. The medical group on file is BASS Medical Group. Dr. Nimmich's employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Andrew Nimmich's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nimmich practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| BASS Imaging Center - Walnut Creek | 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. Andrew Nimmich is one of 532 vascular surgeons in California
Vascular surgery is Dr. Nimmich's primary specialty in the NPI Registry, under taxonomy code 2086S0129X. Dmand AI has Dr. Nimmich's licenses on file in 2 states: California and Texas.
Specialties and state licenses
- Vascular surgery, CaliforniaPrimary
- Texas license
Clinical focus
Dmand AI lists chronic skin ulcer and leg revascularization among the conditions Dr. Nimmich treats.
Vascular surgeons near Dr. Nimmich
Counts of vascular 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. Andrew Nimmich billed Medicare for 12,874 services in 2024
CMS data shows 12,874 Medicare services from Dr. Nimmich across 12 procedure codes in 2024, for 111 Medicare patients. Medicare paid $679,861 for them. Every service was in an office.
Dr. Nimmich's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 10,8162024: 12,38214%
- Surgery
- 2023: 1622024: 25054%
- Imaging
- 2023: 1482024: 23055%
- Office and hospital visits
- 2023: 02024: 12
Dr. Nimmich compared with the California median for vascular surgeons, 2024
- Dr. Nimmich
- California median
- Medicare services
- 12,874vs 60921.1 times
- Medicare patients
- 111vs 27259% below
- Part D claims
- 225vs 554.1 times
Medians across 499 vascular surgeons in California with Dmand AI profiles that report each measure.
Dr. Nimmich'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. Nimmich?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nimmich and other vascular surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Andrew Nimmich treated 111 Medicare patients in 2024, average age 76
CMS counts 111 Medicare patients who saw Dr. Nimmich in 2024. The largest group is 75 to 84, with 40 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 14% are also on Medicaid. Their average risk score is 3.21, 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. Nimmich's median patient age at 71, with 41% women.
Dr. Nimmich's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Nimmich's Medicare patients by sex, 2024
- Women4641%
- Men6559%
Chronic conditions among Dr. Nimmich's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes71%
- Arthritis62%
- Ischemic heart disease55%
- Chronic kidney disease51%
- Heart failure38%
- Mood disorders33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nimmich's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women41%
- Men59%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Andrew Nimmich wrote 246 Medicare Part D claims in 2024
In 2024, Dr. Nimmich wrote 246 Medicare Part D claims for 132 patients. 80% of them were for generic drugs. CMS names the drug for 225 of them, across 2 drugs with 11 or more claims each, at $36,123 in total drug cost. In 2023, CMS named 111 claims across 3 drugs.
Dr. Nimmich's Part D claims by kind of drug, 2024
- Generic197 claims80%
- Brand-name and other49 claims20%
Dr. Nimmich'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1112024: 225103%
Drugs named by CMS: 2 in 2024, 3 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
Dr. Andrew Nimmich ranks in the 79th percentile for leg revascularization (restoring blood flow) in Medicare
Dr. Nimmich accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Nimmich as offering telehealth. CMS counts 19 procedures of leg revascularization (restoring blood flow) by Dr. Nimmich, more than 79% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Nimmich ranks in Medicare procedure volume
- Leg revascularization (restoring blood flow)
- 79th percentile19 procedures
- Varicose vein removal
- 48th percentile13 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Andrew Nimmich has 1 publication on record
Dmand AI links 1 paper to Dr. Nimmich in 2019. Dr. Nimmich's most frequent co-authors are Alik Farber, MD, Scott Anthony Hardouin, MD and Douglas W. Jones, MD.
Dr. Nimmich's most frequent co-authors
- Alik Farber, MD1 shared paper
- Scott Anthony Hardouin, MD1 shared paper
- Douglas W. Jones, MD1 shared paper
Recent publications by Dr. Nimmich
See who Dr. Nimmich researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Nimmich works with, so you can find a warm path to the right vascular surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Andrew Nimmich received $7,654 in industry payments from 2018 to 2025
CMS Open Payments shows 121 general payments to Dr. Nimmich from 27 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 73% of the total. Penumbra, Inc. paid the most, $1,384.
General payments to Dr. Nimmich by program year, 2018 to 2025
General payments to Dr. Nimmich by kind, 2018 to 2025
- Food and beverage$5,61873%
- Travel and lodging$1,17715%
- Education$85911%
Companies that paid Dr. Nimmich the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Andrew Nimmich graduated from Boston University School Of Medicine
Dr. Nimmich graduated from Boston University School Of Medicine in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Andrew Nimmich accepts plans from 19 insurance carriers
Dr. Nimmich is in network with 19 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Cigna
- Elevance
- HCSC
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- +11 more carriersWith a free account
Plan types Dr. Nimmich accepts, by number of carriers
- PPO12
- HMO11
- Medicare8
- POS5
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Andrew Nimmich'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)Doctors and Clinicians Utilization Data (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. Andrew Nimmich
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. Andrew Nimmich's NPI number?
Dr. Andrew Nimmich's NPI number is 1396238945. It was assigned on June 8, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Andrew Nimmich?
Dr. Andrew Nimmich is a vascular surgeon in Walnut Creek, California. The primary specialty in the NPI Registry is Vascular Surgery Physician (taxonomy code 2086S0129X).
Where does Dr. Andrew Nimmich practice?
Dr. Nimmich practices at 2637 Shadelands Drive, Walnut Creek, CA 94598. Dr. Nimmich's primary practice is BASS Imaging Center - Walnut Creek in Walnut Creek, California.
What is Dr. Andrew Nimmich's office phone number?
The practice phone on file for Dr. Nimmich is (925) 329-3710.
What is Dr. Andrew Nimmich's medical license number?
Dr. Nimmich holds California license A198961, one of the licenses on file in 2 states.
Which states has Dr. Andrew Nimmich been licensed in?
Dmand AI has state licenses on file for Dr. Nimmich in California (2024 to 2026) and Texas (2022 to 2024).
Which hospitals is Dr. Andrew Nimmich affiliated with?
Dr. Nimmich is affiliated with Providence Queen of the Valley Medical Center.
What medical group is Dr. Andrew Nimmich part of?
Dr. Nimmich is linked to BASS Medical Group.
Does Dr. Andrew Nimmich accept Medicare?
Yes. CMS data shows Dr. Nimmich billed Medicare for 12,874 services in 2024, and Dr. Nimmich accepts Medicare assignment.
Does Dr. Andrew Nimmich offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Nimmich as offering telehealth services.
Show 9 more questionsShow fewer questions
How many Medicare patients does Dr. Andrew Nimmich see?
CMS counts 111 Medicare patients who saw Dr. Nimmich in 2024, with an average age of 76.
What services does Dr. Andrew Nimmich bill to Medicare?
In 2024, Dr. Nimmich's most billed Medicare services were medicare temporary code (Q9967), ultrasound (76937) and diagnostic imaging (75710).
Where did Dr. Andrew Nimmich go to medical school?
Dr. Nimmich graduated from Boston University School Of Medicine in 2018.
What drugs does Dr. Andrew Nimmich prescribe most?
In 2024 Medicare Part D data, Dr. Nimmich's most prescribed drugs by claims were Clopidogrel and Xarelto.
Has Dr. Andrew Nimmich received payments from drug or device companies?
CMS Open Payments shows $7,654 in general payments to Dr. Nimmich from 27 companies from 2018 to 2025. The largest total came from Penumbra, Inc.
How long has Dr. Andrew Nimmich been practicing?
Dr. Nimmich graduated from medical school in 2018, 8 years ago.
Does Dr. Andrew Nimmich do research?
Dmand AI links 1 publication to Dr. Nimmich.
Who does Dr. Andrew Nimmich publish with?
Dr. Nimmich's most frequent co-authors are Alik Farber, MD (1 shared paper), Scott Anthony Hardouin, MD (1 shared paper) and Douglas W. Jones, MD (1 shared paper).
What insurance does Dr. Andrew Nimmich accept?
Dr. Nimmich is in network with 19 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.
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