Dr. Andrew D. Spears, MD
- Part D claims, 2024
- 857
- Hospital affiliations
- 1
- Industry payments
- $92
- Medical group
- 1
- Insurance carriers
- 2
- Practice address
- 99 Montecillo Rd, San Rafael, CA 94903
- Practice phone
- Call (415) 444-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Spears' professional email, personal email and mobile number
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Dr. Andrew D. Spears is a gastroenterologist in San Rafael, California
Dr. Spears practices at San Rafael Medical Center in San Rafael, California, part of Kaiser Permanente.
Dr. Spears' NPI, 1144249665, was assigned on July 18, 2006. Dr. Spears graduated from Cleveland Medical College, Homeopathic in 1996. Dr. Spears' Colorado license number on file is 41729.
- NPI
- 1144249665NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4284732330
- NPI enumeration date
- July 18, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 444-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Andrew D. Spears practices at San Rafael Medical Center in San Rafael, California
Dr. Spears' primary practice is San Rafael Medical Center, at 99 Montecillo Rd, San Rafael, CA 94903 in Marin County. The practice phone is (415) 444-2000.
- San Rafael Medical Center99 Montecillo Rd, San Rafael, CA 94903 · Marin CountyPhone(415) 444-2000
Source: Dmand AI Affiliation Data
Dr. Andrew D. Spears is affiliated with 1 site of care and 1 medical group
Dr. Spears' primary practice is San Rafael Medical Center in San Rafael, 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. Andrew D. Spears' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Spears practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| San Rafael Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Andrew D. Spears is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Spears' primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Spears is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Spears' licenses on file in 4 states: Colorado, California, Montana and Wyoming.
Specialties and state licenses
- Gastroenterology, ColoradoPrimary
- California license
- Montana license
- Wyoming license
Gastroenterologists near Dr. Spears
Counts of gastroenterologists 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 D. Spears' patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Spears' median patient age at 58, with 54% women.
Dr. Spears' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women54%
- Men45%
Source: Dmand AI Patient Panel Data
Dr. Andrew D. Spears wrote 857 Medicare Part D claims in 2024
In 2024, Dr. Spears wrote 857 Medicare Part D claims for 484 patients. 90% of them were for generic drugs. CMS names the drug for 748 of them, across 12 drugs with 11 or more claims each, at $82,114 in total drug cost. In 2023, CMS named 657 claims across 12 drugs.
Dr. Spears' Part D claims by kind of drug, 2024
- Generic774 claims90%
- Brand-name83 claims10%
Dr. Spears' 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. Spears' Part D claims, 2024
- Antibiotics4%33 of 857 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: 6572024: 74814%
Drugs named by CMS: 12 in 2024, 12 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. Andrew D. Spears takes part in Medicare
Dr. Spears accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 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 D. Spears received $92 in industry payments from 2023 to 2024
CMS Open Payments shows 3 general payments to Dr. Spears from 2 drug and device companies from 2023 to 2024. Food and beverage make up the largest share, 100% of the total. PolyNovo North America LLC paid the most, $50.
General payments to Dr. Spears by program year, 2023 to 2024
Companies that paid Dr. Spears the most, 2023 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Andrew D. Spears has 1 award and honors on record
Dmand AI lists 1 award for Dr. Spears, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Spears
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Andrew D. Spears graduated from Cleveland Medical College, Homeopathic
Dr. Spears graduated from Cleveland Medical College, Homeopathic in 1996.
- Medical school
- Board certified in gastroenterology
Source: Dmand AI Professional Profile Data
Dr. Andrew D. Spears accepts plans from 2 insurance carriers
Dr. Spears 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. Spears accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Andrew D. Spears'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 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| 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. Andrew D. Spears
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 D. Spears' NPI number?
Dr. Andrew D. Spears' NPI number is 1144249665. It was assigned on July 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Andrew D. Spears?
Dr. Andrew D. Spears is a gastroenterologist in San Rafael, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Andrew D. Spears practice?
Dr. Spears practices at 99 Montecillo Rd, San Rafael, CA 94903. Dr. Spears' primary practice is San Rafael Medical Center in San Rafael, California, part of Kaiser Permanente.
What is Dr. Andrew D. Spears' office phone number?
The practice phone on file for Dr. Spears is (415) 444-2000.
What is Dr. Andrew D. Spears' medical license number?
Dr. Spears' Colorado license number on file is 41729, one of the licenses on file in 4 states.
Which states has Dr. Andrew D. Spears been licensed in?
Dmand AI has state licenses on file for Dr. Spears in Colorado (2003 to 2009), California (2008 to 2025), Montana (2007 to 2010) and Wyoming (2008).
Which hospitals is Dr. Andrew D. Spears affiliated with?
Dr. Spears practices at San Rafael Medical Center in San Rafael, California.
What medical group is Dr. Andrew D. Spears part of?
Dr. Spears is linked to The Permanente Medical Group, Inc.
Does Dr. Andrew D. Spears accept Medicare?
Yes. CMS lists Dr. Spears as accepting Medicare assignment.
Is Dr. Andrew D. Spears board certified?
Yes. Dr. Spears is board certified in gastroenterology by the American Board of Internal Medicine.
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Where did Dr. Andrew D. Spears go to medical school?
Dr. Spears graduated from Cleveland Medical College, Homeopathic in 1996.
What drugs does Dr. Andrew D. Spears prescribe most?
In 2024 Medicare Part D data, Dr. Spears' most prescribed drugs by claims were Gavilyte-C, Omeprazole and Budesonide DR.
Has Dr. Andrew D. Spears received payments from drug or device companies?
CMS Open Payments shows $92 in general payments to Dr. Spears from 2 companies from 2023 to 2024. The largest total came from PolyNovo North America LLC.
How long has Dr. Andrew D. Spears been practicing?
Dr. Spears graduated from medical school in 1996, 30 years ago.
What insurance does Dr. Andrew D. Spears accept?
Dr. Spears 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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