2026 NPPES data Internal Medicine Physician NPI 1861685588 M.D.
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SHIH-FEN CHOW, M.D.

Internal Medicine Physician in MORRISTOWN, New Jersey. 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
393
Medicare Part D claims · 63 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$40.76
2 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

SHIH-FEN CHOW, M.D. filed 393 Medicare Part D claims in 2023 as a Internal Medicine Physician in MORRISTOWN, New Jersey, prescribing 93% generic.

393
Part D claims, 2023
93%
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.

SHIH-FEN CHOW, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

393 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 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. 2,000–2,200: 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 certification likely (heuristic — not verified)

SHIH-FEN CHOW, M.D. 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).

What does the federal data show about SHIH-FEN CHOW, M.D.?

Quality data not reported

NPI registry status

Active

Issued 08/27/2007

NPI 1861685588

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

393 86% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in New Jersey

How Internal Medicine Physician compares to other specialties among New Jersey providers

New Jersey providers

Internal Medicine Physician share within New Jersey

1. Internal Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Internal Medicine Physician share within New Jersey

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (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).

SHIH-FEN CHOW, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 2 FOOTES LN, MORRISTOWN, NJ, 07960, with a listed phone of (973) 656-1385. NPI 1861685588 was issued on 08/27/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHOW 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 393 prescription claims written by this provider, covering 63 Medicare beneficiaries and totaling roughly $33K in drug spend, split 7% brand-name and 93% 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.

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

2 FOOTES LN
MORRISTOWN, NJ 07960

Provider Details

NPI 1861685588
Specialty Internal Medicine Physician
Credentials M.D.
Gender Female
NPI Issued 08/27/2007

Hospital and facility affiliations

Facilities where SHIH-FEN CHOW, M.D. 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.

BARNABAS HEALTH MEDICAL GROUP, PC
FLORHAM PARK, NJ

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

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 SHIH-FEN CHOW, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$41

Largest payer

Abbott Laboratories

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 · Generic-heavy

SHIH-FEN CHOW, M.D. — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 393 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.

393
Total Claims
$33K
Total Drug Cost
63
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,062
Total Day Supply
31,091
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$26K
Generic Drug Cost
$6K
Antibiotic Claims
16

Patient Demographics

Average Patient Age
74.3 years
Avg HCC Risk Score
0.68
Gender Split
62% female / 38% male

Top Prescribed Drugs (Medicare Part D)

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

What SHIH-FEN CHOW, M.D. 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
69
Amlodipine Besylate
45
Metformin Hcl Er
Metformin Hcl
37
Losartan Potassium
24
Paxlovid (Eua)
Nirmatrelvir/Ritonavir
15
Rosuvastatin Calcium
12
Valsartan
11

* 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 SHIH-FEN CHOW, M.D. 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

SHIH-FEN CHOW, M.D.'s 393 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in New Jersey

Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as CHOW.

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

Frequently Asked Questions

What is SHIH-FEN CHOW, M.D.'s specialty?
SHIH-FEN CHOW, M.D. specializes in Internal Medicine Physician and practices in MORRISTOWN, New Jersey. Credentials: M.D..
How much does SHIH-FEN CHOW, M.D. prescribe under Medicare Part D?
In 2023, SHIH-FEN CHOW, M.D. wrote 393 Medicare Part D claims totaling $33K in drug costs for 63 beneficiaries.
Where is SHIH-FEN CHOW, M.D. located?
SHIH-FEN CHOW, M.D. is located at 2 FOOTES LN, MORRISTOWN, NJ, 07960. Phone: (973) 656-1385.
What is SHIH-FEN CHOW, M.D.'s NPI number?
SHIH-FEN CHOW, M.D.'s National Provider Identifier (NPI) is 1861685588, issued on 08/27/2007.
Does SHIH-FEN CHOW, M.D. prescribe more brand-name or generic drugs?
SHIH-FEN CHOW, M.D.'s prescribing is 7% brand-name and 93% generic drugs by claim count, with $26K in brand drug costs.
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 SHIH-FEN CHOW, M.D. prescribe most often?
Based on 2023 Medicare Part D data, SHIH-FEN CHOW, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Metformin Hcl Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SHIH-FEN CHOW, M.D. accept Medicare?
SHIH-FEN CHOW, M.D. appears in CMS Medicare data with 393 Part D claims and 63 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SHIH-FEN CHOW, M.D.'s credentials?
SHIH-FEN CHOW, M.D.'s NPI is 1861685588 with credentials M.D.. 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