Dr. Catherine Ann Chester, MD
- Medicare services, 2016
- 594
- Part D claims, 2024
- 1,402
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 500 NE Multnomah St, Portland, OR 97232
- Practice phone
- Call (503) 813-2440
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Foundation Health Plan of the Northwest
Portland, Oregon
Find Dr. Chester'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. Catherine Ann Chester is an internist in Portland, Oregon
Dr. Chester practices at Kaiser Foundation Health Plan of the Northwest in Portland, Oregon.
Dr. Chester's NPI, 1730298803, was assigned on August 30, 2006. Dr. Chester holds Oregon license MD25843.
- NPI
- 1730298803NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4688646896
- NPI enumeration date
- August 30, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (503) 813-2440
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Catherine Ann Chester practices at Kaiser Foundation Health Plan of the Northwest in Portland, Oregon
Dr. Chester's primary practice is Kaiser Foundation Health Plan of the Northwest, at 500 NE Multnomah St, Portland, OR 97232 in Multnomah County. The practice phone is (503) 813-2440.
- Kaiser Foundation Health Plan of the Northwest500 NE Multnomah St, Portland, OR 97232 · Multnomah CountyPhone(503) 813-2440
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Catherine Ann Chester is affiliated with 2 sites of care and 1 medical group
Dr. Chester's primary practice is Kaiser Foundation Health Plan of the Northwest in Portland, Oregon. The medical group on file is Kaiser Permanente Northwest. Dmand AI also links Dr. Chester to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Catherine Ann Chester's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chester practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Foundation Health Plan of the Northwest | 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. Catherine Ann Chester is one of 1,680 internists in Oregon
Internal medicine is Dr. Chester's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chester is licensed in Oregon.
Specialties and state licenses
- Internal medicine, OregonPrimary
Internists near Dr. Chester
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. Catherine Ann Chester billed Medicare for 594 services in 2016
CMS data shows 594 Medicare services from Dr. Chester across 5 procedure codes in 2016. Medicare paid $25,819 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chester's Medicare services by type, 2016
- Office and hospital visits581
- Other services13
Dr. Chester compared with the Oregon median for internists, 2016
- Dr. Chester
- Oregon median
- Medicare services
- 594vs 30098% above
- Part D claims
- 906vs 2224.1 times
Medians across 1,791 internists in Oregon with Dmand AI profiles that report each measure.
Dr. Chester's most billed Medicare procedure codes, 2016
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. Catherine Ann Chester's patients have a median age of 39
Across all payers, Dmand AI patient panel data puts Dr. Chester's median patient age at 39, with 74% women.
Dr. Chester's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 39
Patient panel by sex, all payers
- Women74%
- Men25%
Source: Dmand AI Patient Panel Data
Dr. Catherine Ann Chester wrote 1,402 Medicare Part D claims in 2024
In 2024, Dr. Chester wrote 1,402 Medicare Part D claims for 791 patients. 86% of them were for generic drugs. CMS names the drug for 906 of them, across 38 drugs with 11 or more claims each, at $13,430 in total drug cost. In 2023, CMS named 1,158 claims across 49 drugs.
Dr. Chester's Part D claims by kind of drug, 2024
- Generic1,208 claims86%
- Brand-name172 claims12%
- Other22 claims2%
Dr. Chester'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. Chester's Part D claims, 2024
- Opioids4%57 of 1,402 claims
- Antibiotics21%290 of 1,402 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: 1,1582024: 90622%
Drugs named by CMS: 38 in 2024, 49 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. Catherine Ann Chester offers telehealth to Medicare patients
Dr. Chester accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chester as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sources for Dr. Catherine Ann Chester'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 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 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) |
| 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. Catherine Ann Chester
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. Catherine Ann Chester's NPI number?
Dr. Catherine Ann Chester's NPI number is 1730298803. It was assigned on August 30, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Catherine Ann Chester?
Dr. Catherine Ann Chester is an internist in Portland, Oregon. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Catherine Ann Chester practice?
Dr. Chester practices at 500 NE Multnomah St, Portland, OR 97232. Dr. Chester's primary practice is Kaiser Foundation Health Plan of the Northwest in Portland, Oregon. Dmand AI also links Dr. Chester to 1 group practice or clinic.
What is Dr. Catherine Ann Chester's office phone number?
The practice phone on file for Dr. Chester is (503) 813-2440.
What is Dr. Catherine Ann Chester's medical license number?
Dr. Chester holds Oregon license MD25843.
What medical group is Dr. Catherine Ann Chester part of?
Dr. Chester is linked to Kaiser Permanente Northwest.
Does Dr. Catherine Ann Chester accept Medicare?
Yes. CMS data shows Dr. Chester billed Medicare for 594 services in 2016, and Dr. Chester accepts Medicare assignment.
Does Dr. Catherine Ann Chester offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chester as offering telehealth services.
What services does Dr. Catherine Ann Chester bill to Medicare?
In 2016, Dr. Chester's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, new patient (99203).
What drugs does Dr. Catherine Ann Chester prescribe most?
In 2024 Medicare Part D data, Dr. Chester's most prescribed drugs by claims were Nitrofurantoin Mono-Macro, Paxlovid and Albuterol Sulfate Hfa.
How long has Dr. Catherine Ann Chester been practicing?
Dr. Chester graduated from medical school in 1994, 32 years ago.
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