2026 NPPES data Internal Medicine Physician NPI 1194717132 MD
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Darlene Foster, MD

Internal Medicine Physician in Oklahoma City, Oklahoma. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,858 in Internal Medicine 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
7K
Medicare Part D claims · 449 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
82%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
8.6/100
▼ 75 pts below national avg 83.1 · Penalty band
Industry payments
$433.48
23 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Darlene Foster, MD reported a CMS MIPS final score of 8.6/100 - below the 83.1 national average - and filed 6,982 Medicare Part D claims in 2023.

8.6/100
MIPS score · -75 vs avg
7K
Part D claims, 2023
82%
generic prescribing
Likely
board-certified (heuristic)

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.

Darlene Foster, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure

9 2nd percentile higher than 2% of 477,587 scored providers

0–10: 8,684 scored providers (2%). This entry sits in this band. 10–20: 3,008 scored providers (1%). Above this entry. 20–30: 3,069 scored providers (1%). Above this entry. 30–40: 2,746 scored providers (1%). Above this entry. 40–50: 2,928 scored providers (1%). Above this entry. 50–60: 5,882 scored providers (1%). Above this entry. 60–70: 13,906 scored providers (3%). Above this entry. 70–80: 118,074 scored providers (25%). Above this entry. 80–90: 129,887 scored providers (27%). Above this entry. 90+: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Where Darlene Foster, MD sits

This provider among internal medicine physician peers

Across the 36,260 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Darlene Foster, MD writes more Part D claims than 86% of them and scores higher on MIPS quality than 1% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Part D claim volume vs MIPS quality, by specialty percentile

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 28Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 80Darlene Foster, MD-Part D claim volume, percentile in specialty: 86 · MIPS quality, percentile: 1
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one internal medicine physician peer from a representative sample of 60; the gold marker is Darlene Foster, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

Board certification likely (heuristic, not verified)

Darlene Foster, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Darlene Foster, MD?

Below national average

NPI registry status

Active

Issued 08/16/2005

NPI 1194717132

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

6,982 157% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

MIPS final score

8.6/100 74.5 pts vs avg

Penalty band band

vs 83.1 national avg

Specialty distribution in Oklahoma

How Internal Medicine Physician compares to other specialties among Oklahoma providers

Oklahoma providers
Case Manager/Care Coordinator - 9.7%Case Manager/Care Coordinator9.7%Mental Health Counselor - 7.2%Mental Health Counselor7.2%Behavior Technician - 6.2%Behavior Technician6.2%Peer Specialist - 5.5%Peer Specialist5.5%Counselor - 5%Counselor5%Student in an Organized Health Care Education/Training Program - 4.2%Student in an Organized Health Care Education/Training Program4.2%Internal Medicine Physician - 1.5%Internal Medicine Physician1.5%
Largest specialties in Oklahoma (% of in-state providers)

Medicare quality performance, MIPS

Darlene Foster, MD's 2023 MIPS final score plotted against the Internal Medicine Physician national average

Below national average
MIPS Final Score
8.6/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Internal Medicine Physician) - 8.6/100 vs national avg 83.1

0%100%National avg83%8.6%
MIPS final score (Internal Medicine Physician) - 8.6/100 vs national avg 83.1

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).

Darlene Foster, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 3330 NW 56TH ST, Oklahoma City, OK, 73112, with a listed phone of (405) 951-5992. NPI 1194717132 was issued on 08/16/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Foster 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 6,982 prescription claims written by this provider, covering 449 Medicare beneficiaries and totaling roughly $1.1 million in drug spend, split 17% brand-name and 82% generic by claim count, with an opioid prescribing rate of 1.6%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 8.6/100 for the 2023 performance year (Quality 0, Cost 28.6), compared with the national average of 83.1.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

3330 NW 56TH ST
Oklahoma City, OK 73112

Provider Details

NPI 1194717132
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 08/16/2005

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

8.5932
Final Score
Avg: 83.1
0
Quality
28.644
Cost

Reporting: Individual

Industry payments received (2024) - CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Darlene Foster, MD. Source: openpaymentsdata.cms.gov.

Total received

$433

Largest payer

Bayer Healthcare Pharmaceuticals Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Typical

Darlene Foster, MD - brand share 17.0%
Internal Medicine Physician average

17% brand-name claims vs 82% generic, on 6,982 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.

6,982
Total Claims
$1.1M
Total Drug Cost
449
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
16,354
Total Day Supply
479,657
Brand vs Generic
17% brand / 82% generic
Brand Drug Cost
$991K
Generic Drug Cost
$138K
Opioid Claims
111 (1.6% rate)
Antibiotic Claims
91

Patient Demographics

Average Patient Age
76.0 years
Avg HCC Risk Score
1.30
Gender Split
76% female / 24% male
Age Distribution
<65: 31, 65-74: 162, 75-84: 169, 85+: 87

Top Prescribed Drugs (Medicare Part D)

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

What Darlene Foster, 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
376
Levothyroxine Sodium
293
Lisinopril
286
Amlodipine Besylate
243
Gabapentin
232
Rosuvastatin Calcium
218
Hydrochlorothiazide
215
Mounjaro
Tirzepatide
215
Losartan Potassium
191
Pantoprazole Sodium
151

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

Internal Medicine Physician Overview

How Darlene Foster, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

Darlene Foster, MD's 6,982 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Oklahoma

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

Compare Internal Medicine 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 Oklahoma medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Internal Medicine 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 Darlene Foster, MD's specialty?
Darlene Foster, MD specializes in Internal Medicine Physician and practices in Oklahoma City, Oklahoma. Credentials: MD.
How much does Darlene Foster, MD prescribe under Medicare Part D?
In 2023, Darlene Foster, MD wrote 6,982 Medicare Part D claims totaling $1.1M in drug costs for 449 beneficiaries.
What is Darlene Foster, MD's Medicare quality score?
Darlene Foster, MD has a CMS MIPS Final Score of 8.6/100 (Quality: 0, Cost: 28.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Darlene Foster, MD located?
Darlene Foster, MD is located at 3330 NW 56TH ST, Oklahoma City, OK, 73112. Phone: (405) 951-5992.
What is Darlene Foster, MD's NPI number?
Darlene Foster, MD's National Provider Identifier (NPI) is 1194717132, issued on 08/16/2005.
Does Darlene Foster, MD prescribe more brand-name or generic drugs?
Darlene Foster, MD's prescribing is 17% brand-name and 82% generic drugs by claim count, with $991K in brand drug costs.
Does Darlene Foster, MD prescribe opioids?
Yes, Darlene Foster, MD had 111 opioid claims in 2023 with an opioid prescribing rate of 1.6%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Darlene Foster, MD prescribe most often?
Based on 2023 Medicare Part D data, Darlene Foster, MD's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Darlene Foster, MD accept Medicare?
Darlene Foster, MD appears in CMS Medicare data with 6,982 Part D claims and 449 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Darlene Foster, MD's credentials?
Darlene Foster, MD's NPI is 1194717132 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
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.