2026 NPPES data Hospitalist Physician NPI 1841494465 M.D.
Verify on CMS →

JENNIFER GRAY, M.D.

Hospitalist Physician in DENVER, 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 · 185 beneficiaries · Hospitalist Physician avg: 888
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$146.26
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

JENNIFER GRAY, M.D. filed 1,635 Medicare Part D claims in 2023 as a Hospitalist Physician in DENVER, Colorado, prescribing 86% generic.

2K
Part D claims, 2023
86%
generic prescribing
$146.26
industry payments (Sunshine Act)

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.

JENNIFER GRAY, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

1,635 Top 18% higher than 82% 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%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). This entry sits in this band. 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-eligible specialty (heuristic — not verified)

JENNIFER GRAY, M.D. 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 JENNIFER GRAY, M.D.?

Quality data not reported

NPI registry status

Active

Issued 06/14/2007

NPI 1841494465

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Medicare Part D claims

1,635 84% vs specialty avg

2023 prescription claims

Specialty avg: 888

Specialty distribution in Colorado

How Hospitalist Physician compares to other specialties among Colorado providers

Colorado providers

Hospitalist Physician share within Colorado

1. Hospitalist Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hospitalist Physician share within Colorado

Specialty board-certification context

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

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

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

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

JENNIFER GRAY, M.D. appears in the CMS NPPES registry as a Hospitalist Physician provider holding M.D. credentials at 835 E 18TH AVE STE 110, DENVER, CO, 80218, with a listed phone of (303) 825-4646. NPI 1841494465 was issued on 06/14/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GRAY 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 1,635 prescription claims written by this provider, covering 185 Medicare beneficiaries and totaling roughly $211K in drug spend, split 14% brand-name and 86% generic by claim count, with an opioid prescribing rate of 1.0%. 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.

Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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

835 E 18TH AVE STE 110
DENVER, CO 80218

Provider Details

NPI 1841494465
Specialty Hospitalist Physician
Credentials M.D.
Gender Female
NPI Issued 06/14/2007

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 JENNIFER GRAY, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$146

Largest payer

Boston Scientific Corporation

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

JENNIFER GRAY, M.D. — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 1,635 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.

1,635
Total Claims
$211K
Total Drug Cost
185
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,007
Total Day Supply
117,299
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$177K
Generic Drug Cost
$32K
Opioid Claims
17 (1.0% rate)
Antibiotic Claims
45

Patient Demographics

Average Patient Age
73.4 years
Avg HCC Risk Score
1.18
Gender Split
70% female / 30% male
Age Distribution
<65: 15, 65-74: 89, 75-84: 66, 85+: 15

Top Prescribed Drugs (Medicare Part D)

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

What JENNIFER GRAY, 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
149
Levothyroxine Sodium
84
Amlodipine Besylate
59
Hydrochlorothiazide
55
Lisinopril
55
Losartan Potassium
47
Gabapentin
42
Metformin Hcl
36
Simvastatin
36
Trazodone Hcl
36

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

Hospitalist Physician Overview

How JENNIFER GRAY, M.D. fits within the Hospitalist Physician landscape nationally.

16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider

JENNIFER GRAY, M.D.'s 1,635 claims are above the specialty average of 888.

Nearby Hospitalist Physician Providers in Colorado

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

Compare Hospitalist Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JENNIFER GRAY, M.D.'s specialty?
JENNIFER GRAY, M.D. specializes in Hospitalist Physician and practices in DENVER, Colorado. Credentials: M.D..
How much does JENNIFER GRAY, M.D. prescribe under Medicare Part D?
In 2023, JENNIFER GRAY, M.D. wrote 1,635 Medicare Part D claims totaling $211K in drug costs for 185 beneficiaries.
Where is JENNIFER GRAY, M.D. located?
JENNIFER GRAY, M.D. is located at 835 E 18TH AVE STE 110, DENVER, CO, 80218. Phone: (303) 825-4646.
What is JENNIFER GRAY, M.D.'s NPI number?
JENNIFER GRAY, M.D.'s National Provider Identifier (NPI) is 1841494465, issued on 06/14/2007.
Does JENNIFER GRAY, M.D. prescribe more brand-name or generic drugs?
JENNIFER GRAY, M.D.'s prescribing is 14% brand-name and 86% generic drugs by claim count, with $177K in brand drug costs.
Does JENNIFER GRAY, M.D. prescribe opioids?
Yes, JENNIFER GRAY, M.D. had 17 opioid claims in 2023 with an opioid prescribing rate of 1.0%.
How many Hospitalist Physician providers are there in the US?
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does JENNIFER GRAY, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JENNIFER GRAY, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JENNIFER GRAY, M.D. accept Medicare?
JENNIFER GRAY, M.D. appears in CMS Medicare data with 1,635 Part D claims and 185 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JENNIFER GRAY, M.D.'s credentials?
JENNIFER GRAY, M.D.'s NPI is 1841494465 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