Dr. Tiffany Roslyn Lewis, MD
- Medicare services, 2024
- 255
- Medicare patients, 2024
- 183
- Part D claims, 2024
- 145
- Hospital affiliations
- 2
- Medical groups
- 4
- Practice address
- 1200 B Gale Wilson Blvd, Fairfield, CA 94533
- Practice phone
- Call (707) 646-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Lewis' 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. Tiffany Roslyn Lewis is an emergency medicine physician in Fairfield, California
Dr. Lewis practices at NorthBay Medical Center in Fairfield, California, part of NorthBay Healthcare.
Dr. Lewis' NPI, 1902124241, was assigned on May 11, 2010. Dr. Lewis graduated from UC Davis School of Medicine in 2012. Dr. Lewis holds California license A128528.
- NPI
- 1902124241NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072823202
- NPI enumeration date
- May 11, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (707) 646-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Tiffany Roslyn Lewis practices at NorthBay Medical Center in Fairfield, California
Dr. Lewis' primary practice is NorthBay Medical Center, at 1200 B Gale Wilson Blvd, Fairfield, CA 94533 in Solano County. The practice phone is (707) 646-5000.
- NorthBay Medical Center1200 B Gale Wilson Blvd, Fairfield, CA 94533 · Solano CountyPhone(707) 646-5000
Source: Dmand AI Affiliation Data
Dr. Tiffany Roslyn Lewis is affiliated with 2 sites of care and 4 medical groups
Dr. Lewis' primary practice is NorthBay Medical Center in Fairfield, California, part of NorthBay Healthcare. Dr. Lewis is also affiliated with Kaiser Permanente South Sacramento Medical Center. The medical group on file is NorthBay Medical Center. Dmand AI also links Dr. Lewis to 3 more medical groups, each named with a free account. Dr. Lewis' employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Tiffany Roslyn Lewis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lewis practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| NorthBay Medical Center | Available with a free account |
| +1 more site and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across NorthBay Healthcare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Tiffany Roslyn Lewis is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Lewis' primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Lewis is board certified in emergency medicine by the American Board of Emergency Medicine. Dr. Lewis is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Lewis
Counts of emergency medicine physicians 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. Tiffany Roslyn Lewis billed Medicare for 255 services in 2024
CMS data shows 255 Medicare services from Dr. Lewis across 4 procedure codes in 2024, for 183 Medicare patients. Medicare paid $23,555 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lewis' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1072024: 16857%
- Tests and treatments
- 2023: 552024: 8758%
Dr. Lewis compared with the California median for emergency medicine physicians, 2024
- Dr. Lewis
- California median
- Medicare services
- 255vs 265Close to median
- Medicare patients
- 183vs 24325% below
- Part D claims
- 25vs 6260% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Lewis' 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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Tiffany Roslyn Lewis treated 183 Medicare patients in 2024, average age 71
CMS counts 183 Medicare patients who saw Dr. Lewis in 2024. The largest group is 65 to 74, with 68 patients. 75% of them have high blood pressure, and 69% have high cholesterol. 62% are also on Medicaid. Their average risk score is 2.39, 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. Lewis' median patient age at 36, with 59% women.
Dr. Lewis' Medicare patients by age, 2024
Dr. Lewis' Medicare patients by sex, 2024
- Women10155%
- Men8245%
Chronic conditions among Dr. Lewis' Medicare patients, 2024
- High blood pressure75%
- High cholesterol69%
- Arthritis50%
- Diabetes50%
- Chronic kidney disease41%
- Mood disorders36%
- Ischemic heart disease33%
- Anxiety32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lewis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 36
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Tiffany Roslyn Lewis wrote 145 Medicare Part D claims in 2024
In 2024, Dr. Lewis wrote 145 Medicare Part D claims for 77 patients. 87% of them were for generic drugs. CMS names the drug for 25 of them, across 2 drugs with 11 or more claims each, at $114 in total drug cost. In 2022, CMS named 36 claims across 2 drugs.
Dr. Lewis' Part D claims by kind of drug, 2024
- Generic126 claims87%
- Brand-name19 claims13%
Dr. Lewis' most prescribed drugs by claims, 2023
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. Lewis' Part D claims, 2024
- Opioids11%16 of 145 claims
- Antibiotics17%24 of 145 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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 362023: 2531%
Drugs named by CMS: 2 in 2023, 2 in 2022.
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. Tiffany Roslyn Lewis takes part in Medicare
Dr. Lewis 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. Tiffany Roslyn Lewis graduated from UC Davis School of Medicine
Dr. Lewis graduated from UC Davis School of Medicine in 2012.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Tiffany Roslyn Lewis accepts plans from 2 insurance carriers
Dr. Lewis is in network with 2 carriers, including CMS Medicare and NV State Medicaid. Medicaid plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
- NV State Medicaid
Plan types Dr. Lewis accepts, by number of carriers
- Medicaid1
- Medicare1
Source: Dmand AI Insurance Network Data
Sources for Dr. Tiffany Roslyn Lewis'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) |
| 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. Tiffany Roslyn Lewis
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. Tiffany Roslyn Lewis' NPI number?
Dr. Tiffany Roslyn Lewis' NPI number is 1902124241. It was assigned on May 11, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Tiffany Roslyn Lewis?
Dr. Tiffany Roslyn Lewis is an emergency medicine physician in Fairfield, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Tiffany Roslyn Lewis practice?
Dr. Lewis practices at 1200 B Gale Wilson Blvd, Fairfield, CA 94533. Dr. Lewis' primary practice is NorthBay Medical Center in Fairfield, California, part of NorthBay Healthcare. Dmand AI also links Dr. Lewis to 3 medical groups.
What is Dr. Tiffany Roslyn Lewis' office phone number?
The practice phone on file for Dr. Lewis is (707) 646-5000.
What is Dr. Tiffany Roslyn Lewis' medical license number?
Dr. Lewis holds California license A128528.
Which hospitals is Dr. Tiffany Roslyn Lewis affiliated with?
Dr. Lewis practices at NorthBay Medical Center in Fairfield, California. Dr. Lewis is also affiliated with Kaiser Permanente South Sacramento Medical Center.
What medical group is Dr. Tiffany Roslyn Lewis part of?
Dr. Lewis is linked to NorthBay Medical Center. Dmand AI links Dr. Lewis to 3 more medical groups.
Does Dr. Tiffany Roslyn Lewis accept Medicare?
Yes. CMS data shows Dr. Lewis billed Medicare for 255 services in 2024, and Dr. Lewis accepts Medicare assignment.
How many Medicare patients does Dr. Tiffany Roslyn Lewis see?
CMS counts 183 Medicare patients who saw Dr. Lewis in 2024, with an average age of 71.
Is Dr. Tiffany Roslyn Lewis board certified?
Yes. Dr. Lewis is board certified in emergency medicine by the American Board of Emergency Medicine.
Show 5 more questionsShow fewer questions
What services does Dr. Tiffany Roslyn Lewis bill to Medicare?
In 2024, Dr. Lewis' most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).
Where did Dr. Tiffany Roslyn Lewis go to medical school?
Dr. Lewis graduated from UC Davis School of Medicine in 2012.
What drugs does Dr. Tiffany Roslyn Lewis prescribe most?
In 2023 Medicare Part D data, Dr. Lewis' most prescribed drugs by claims were Prednisone and Cephalexin.
How long has Dr. Tiffany Roslyn Lewis been practicing?
Dr. Lewis graduated from medical school in 2012, 14 years ago.
What insurance does Dr. Tiffany Roslyn Lewis accept?
Dr. Lewis is in network with 2 carriers, including CMS Medicare and NV State Medicaid. Medicaid plans come from the most carriers, 1. Check the plan with the practice before a visit.
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