2026 NPPES data Cardiovascular Disease Physician NPI 1639747991 MD
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Chloe Ferris, MD

Cardiovascular Disease Physician in Saint Louis, Missouri. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 24,795 in Cardiovascular Disease Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
826
Medicare Part D claims · 62 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
76%
generic claims · 22% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Chloe Ferris, MD filed 826 Medicare Part D claims in 2023 as a Cardiovascular Disease Physician in Saint Louis, Missouri, prescribing 76% generic.

826
Part D claims, 2023
76%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.

Chloe Ferris, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

826 Top 27% higher than 73% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic, not verified)

Chloe Ferris, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Chloe Ferris, MD?

Quality data not reported

NPI registry status

Active

Issued 06/14/2021

NPI 1639747991

Primary specialty

Cardiovascular Disease Physician

Mid-sized

24,795 US NPIs in this specialty

Medicare Part D claims

826 73% vs specialty avg

2023 prescription claims

Specialty avg: 3,033

Specialty distribution in Missouri

How Cardiovascular Disease Physician compares to other specialties among Missouri providers

Missouri providers
Pharmacist - 4.8%Pharmacist4.8%Professional Counselor - 4.8%Professional Counselor4.8%Speech-Language Pathologist - 4.5%Speech-Language Pathologist4.5%Clinical Social Worker - 4.5%Clinical Social Worker4.5%Family Nurse Practitioner - 4.3%Family Nurse Practitioner4.3%Physical Therapist - 4%Physical Therapist4%Cardiovascular Disease Physician - 0.4%Cardiovascular Disease Physician0.4%
Largest specialties in Missouri (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Cardiovascular Disease Physician. Verify directly:

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).

Chloe Ferris, MD appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding MD credentials at 660 S EUCLID AVE # 8086, Saint Louis, MO, 63110, with a listed phone of (314) 362-1291. NPI 1639747991 was issued on 06/14/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Ferris 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 826 prescription claims written by this provider, covering 62 Medicare beneficiaries and totaling roughly $149K in drug spend, split 22% brand-name and 76% generic by claim count. 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.

Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,795 enrolled providers across 54 states and an average of 3,033 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

660 S EUCLID AVE # 8086
Saint Louis, MO 63110

Provider Details

NPI 1639747991
Specialty Cardiovascular Disease Physician
Credentials MD
Gender Female
NPI Issued 06/14/2021

Brand vs generic prescribing mix · Typical

Chloe Ferris, MD - brand share 22.0%
Cardiovascular Disease Physician average

22% brand-name claims vs 76% generic, on 826 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.

826
Total Claims
$149K
Total Drug Cost
62
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,281
Total Day Supply
37,701
Brand vs Generic
22% brand / 76% generic
Brand Drug Cost
$135K
Generic Drug Cost
$12K

Patient Demographics

Average Patient Age
61.9 years
Avg HCC Risk Score
2.31
Gender Split
63% female / 37% male
Age Distribution
<65: 31, 65-74: 23, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What Chloe Ferris, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
61
Amlodipine Besylate
40
Farxiga
Dapagliflozin Propanediol
33
Pantoprazole Sodium
33
Gabapentin
26
Rybelsus
Semaglutide
26
Diclofenac Sodium
24
Metformin Hcl
24
Carvedilol
23
Trazodone Hcl
22

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

Cardiovascular Disease Physician Overview

How Chloe Ferris, MD fits within the Cardiovascular Disease Physician landscape nationally.

24,795
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider

Chloe Ferris, MD's 826 claims are below the specialty average of 3,033.

Nearby Cardiovascular Disease Physician Providers in Missouri

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

Compare Cardiovascular Disease Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Missouri medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Cardiovascular Disease Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Chloe Ferris, MD's specialty?
Chloe Ferris, MD specializes in Cardiovascular Disease Physician and practices in Saint Louis, Missouri. Credentials: MD.
How much does Chloe Ferris, MD prescribe under Medicare Part D?
In 2023, Chloe Ferris, MD wrote 826 Medicare Part D claims totaling $149K in drug costs for 62 beneficiaries.
Where is Chloe Ferris, MD located?
Chloe Ferris, MD is located at 660 S EUCLID AVE # 8086, Saint Louis, MO, 63110. Phone: (314) 362-1291.
What is Chloe Ferris, MD's NPI number?
Chloe Ferris, MD's National Provider Identifier (NPI) is 1639747991, issued on 06/14/2021.
Does Chloe Ferris, MD prescribe more brand-name or generic drugs?
Chloe Ferris, MD's prescribing is 22% brand-name and 76% generic drugs by claim count, with $135K in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US?
There are 24,795 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does Chloe Ferris, MD prescribe most often?
Based on 2023 Medicare Part D data, Chloe Ferris, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Farxiga. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Chloe Ferris, MD accept Medicare?
Chloe Ferris, MD appears in CMS Medicare data with 826 Part D claims and 62 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Chloe Ferris, MD's credentials?
Chloe Ferris, MD's NPI is 1639747991 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

Compiled from official public sources by the PlainDoctor editorial team.