2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1558866251 MD
Verify on CMS →

SOPHIE CLARK, MD

Geriatric Medicine (Internal Medicine) Physician in AURORA, Colorado. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
2K
Medicare Part D claims · 274 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: SOPHIE CLARK, MD is a Geriatric Medicine (Internal Medicine) Physician ([object Object]) practicing in AURORA, Colorado with a Medicare Part D prescribing footprint of 2K claims across 274 beneficiaries — 13% brand-name prescribing .

What stands out: SOPHIE CLARK, MD filed 1,946 Medicare Part D claims in 2023 across AURORA, Colorado. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

SOPHIE CLARK, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

SOPHIE CLARK, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 03/26/2018

NPI 1558866251

Primary specialty

Geriatric Medicine (Internal Medicine) Physician

Niche

4,161 US NPIs in this specialty

Medicare Part D claims

1,946 56% vs specialty avg

2023 prescription claims

Specialty avg: 4,450

Specialty distribution in Colorado

How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Colorado providers

Colorado providers

Geriatric Medicine (Internal Medicine) Physician share within Colorado

1. Geriatric Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Geriatric Medicine (Internal Medicine) Physician share within Colorado

Specialty board-certification context

Estimated specialty board-certified rate — Geriatric Medicine (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Geriatric Medicine (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Geriatric Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Geriatric Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

SOPHIE CLARK, MD is a Geriatric Medicine (Internal Medicine) Physician provider practicing in AURORA, Colorado, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1558866251. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

SOPHIE CLARK, MD appears in the CMS NPPES registry as a Geriatric Medicine (Internal Medicine) Physician provider holding MD credentials at 1635 AURORA CT FL 5, AURORA, CO, 80045, with a listed phone of (720) 848-0000. NPI 1558866251 was issued on 03/26/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CLARK most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,946 prescription claims written by this provider, covering 274 Medicare beneficiaries and totaling roughly $242K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 3.3%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Geriatric Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 4,161 enrolled providers across 52 states and an average of 4,450 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

1635 AURORA CT FL 5
AURORA, CO 80045

Provider Details

NPI 1558866251
Specialty Geriatric Medicine (Internal Medicine) Physician
Credentials MD
Gender Female
NPI Issued 03/26/2018

Hospital and facility affiliations

Facilities where SOPHIE CLARK, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

UNIVERSITY PHYSICIANS INCORPORATED
AURORA, CO

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Typical

SOPHIE CLARK, MD — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 1,946 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,946
Total Claims
$242K
Total Drug Cost
274
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,520
Total Day Supply
132,131
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$194K
Generic Drug Cost
$48K
Opioid Claims
64 (3.3% rate)
Antibiotic Claims
36

Patient Demographics

Average Patient Age
81.6 years
Avg HCC Risk Score
1.67
Gender Split
72% female / 28% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Levothyroxine Sodium
110
Losartan Potassium
108
Duloxetine Hcl
95
Atorvastatin Calcium
94
Lisinopril
65
Amlodipine Besylate
60
Alendronate Sodium
52
Gabapentin
50
Escitalopram Oxalate
39
Rosuvastatin Calcium
39

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Geriatric Medicine (Internal Medicine) Physician Overview

How SOPHIE CLARK, MD fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.

4,161
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,450
Avg Claims per Provider

SOPHIE CLARK, MD's 1,946 claims are below the specialty average of 4,450.

Nearby Geriatric Medicine (Internal Medicine) Physician Providers in Colorado

Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as CLARK.

Compare Geriatric Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SOPHIE CLARK, MD's specialty?
SOPHIE CLARK, MD specializes in Geriatric Medicine (Internal Medicine) Physician and practices in AURORA, Colorado. Credentials: MD.
How much does SOPHIE CLARK, MD prescribe under Medicare Part D?
In 2023, SOPHIE CLARK, MD wrote 1,946 Medicare Part D claims totaling $242K in drug costs for 274 beneficiaries.
Where is SOPHIE CLARK, MD located?
SOPHIE CLARK, MD is located at 1635 AURORA CT FL 5, AURORA, CO, 80045. Phone: (720) 848-0000.
What is SOPHIE CLARK, MD's NPI number?
SOPHIE CLARK, MD's National Provider Identifier (NPI) is 1558866251, issued on 03/26/2018.
Does SOPHIE CLARK, MD prescribe more brand-name or generic drugs?
SOPHIE CLARK, MD's prescribing is 13% brand-name and 87% generic drugs by claim count, with $194K in brand drug costs.
Does SOPHIE CLARK, MD prescribe opioids?
Yes, SOPHIE CLARK, MD had 64 opioid claims in 2023 with an opioid prescribing rate of 3.3%.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US?
There are 4,161 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,450 Medicare Part D claims per year.
What drugs does SOPHIE CLARK, MD prescribe most often?
Based on 2023 Medicare Part D data, SOPHIE CLARK, MD's most frequently prescribed drugs include Levothyroxine Sodium, Losartan Potassium, Duloxetine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SOPHIE CLARK, MD accept Medicare?
SOPHIE CLARK, MD appears in CMS Medicare data with 1,946 Part D claims and 274 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SOPHIE CLARK, MD's credentials?
SOPHIE CLARK, MD's NPI is 1558866251 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology