2026 NPPES data Pediatrics Physician NPI 1194847624 M.D., M.P.H.
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JINLENE CHAN, M.D., M.P.H.

Pediatrics Physician in ANNAPOLIS, Maryland. 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
1K
Medicare Part D claims · 1K beneficiaries · Pediatrics Physician avg: 762
Generic prescribing
65%
generic claims · 35% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

JINLENE CHAN, M.D., M.P.H. filed 1,433 Medicare Part D claims in 2023 as a Pediatrics Physician in ANNAPOLIS, Maryland, prescribing 65% generic.

1K
Part D claims, 2023
65%
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.

JINLENE CHAN, M.D., M.P.H.'s Medicare Part D volume vs every U.S. prescriber

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

1,433 Top 20% higher than 80% 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%). This entry sits in this band. 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-eligible specialty (heuristic — not verified)

JINLENE CHAN, M.D., M.P.H. 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 JINLENE CHAN, M.D., M.P.H.?

Quality data not reported

NPI registry status

Active

Issued 04/04/2007

NPI 1194847624

Primary specialty

Pediatrics Physician

High-volume

80,574 US NPIs in this specialty

Medicare Part D claims

1,433 88% vs specialty avg

2023 prescription claims

Specialty avg: 762

Specialty distribution in Maryland

How Pediatrics Physician compares to other specialties among Maryland providers

Maryland providers

Pediatrics Physician share within Maryland

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

Specialty board-certification context

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

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

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

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

JINLENE CHAN, M.D., M.P.H. is a Pediatrics Physician provider practicing in ANNAPOLIS, Maryland, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D., M.P.H.. NPI: 1194847624. 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.

JINLENE CHAN, M.D., M.P.H. appears in the CMS NPPES registry as a Pediatrics Physician provider holding M.D., M.P.H. credentials at 3 HARRY S TRUMAN PKWY, ANNAPOLIS, MD, 21401, with a listed phone of (410) 222-4174. NPI 1194847624 was issued on 04/04/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHAN 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 1,433 prescription claims written by this provider, covering 1,108 Medicare beneficiaries and totaling roughly $151K in drug spend, split 35% brand-name and 65% 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.

Pediatrics Physician is a high-volume specialty nationwide, with 80,574 enrolled providers across 56 states and an average of 762 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

3 HARRY S TRUMAN PKWY
ANNAPOLIS, MD 21401

Provider Details

NPI 1194847624
Specialty Pediatrics Physician
Credentials M.D., M.P.H.
Gender Female
NPI Issued 04/04/2007

Brand vs generic prescribing mix · Above average

JINLENE CHAN, M.D., M.P.H. — brand share 35.0%
Specialty average (est.)

35% brand-name claims vs 65% generic, on 1,433 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.

1,433
Total Claims
$151K
Total Drug Cost
1,108
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,435
Total Day Supply
15,525
Brand vs Generic
35% brand / 65% generic
Brand Drug Cost
$74K
Generic Drug Cost
$76K

Patient Demographics

Average Patient Age
66.4 years
Avg HCC Risk Score
1.63
Gender Split
63% female / 37% male
Age Distribution
<65: 420, 65-74: 417, 75-84: 222, 85+: 49

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Naloxone Hcl
1,170
Narcan
Naloxone Hcl
114
Shingrix
Varicella-Zoster Ge/As01b/Pf
49
Abrysvo
"Rsv Vacc
N/A

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

Pediatrics Physician Overview

How JINLENE CHAN, M.D., M.P.H. fits within the Pediatrics Physician landscape nationally.

80,574
Pediatrics Physician Providers in US
56
States with Pediatrics Physician
762
Avg Claims per Provider

JINLENE CHAN, M.D., M.P.H.'s 1,433 claims are above the specialty average of 762.

Nearby Pediatrics Physician Providers in Maryland

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

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

Frequently Asked Questions

What is JINLENE CHAN, M.D., M.P.H.'s specialty?
JINLENE CHAN, M.D., M.P.H. specializes in Pediatrics Physician and practices in ANNAPOLIS, Maryland. Credentials: M.D., M.P.H..
How much does JINLENE CHAN, M.D., M.P.H. prescribe under Medicare Part D?
In 2023, JINLENE CHAN, M.D., M.P.H. wrote 1,433 Medicare Part D claims totaling $151K in drug costs for 1,108 beneficiaries.
Where is JINLENE CHAN, M.D., M.P.H. located?
JINLENE CHAN, M.D., M.P.H. is located at 3 HARRY S TRUMAN PKWY, ANNAPOLIS, MD, 21401. Phone: (410) 222-4174.
What is JINLENE CHAN, M.D., M.P.H.'s NPI number?
JINLENE CHAN, M.D., M.P.H.'s National Provider Identifier (NPI) is 1194847624, issued on 04/04/2007.
Does JINLENE CHAN, M.D., M.P.H. prescribe more brand-name or generic drugs?
JINLENE CHAN, M.D., M.P.H.'s prescribing is 35% brand-name and 65% generic drugs by claim count, with $74K in brand drug costs.
How many Pediatrics Physician providers are there in the US?
There are 80,574 Pediatrics Physician providers across 56 states in the US. The average Pediatrics Physician provider writes 762 Medicare Part D claims per year.
What drugs does JINLENE CHAN, M.D., M.P.H. prescribe most often?
Based on 2023 Medicare Part D data, JINLENE CHAN, M.D., M.P.H.'s most frequently prescribed drugs include Naloxone Hcl, Narcan, Shingrix. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JINLENE CHAN, M.D., M.P.H. accept Medicare?
JINLENE CHAN, M.D., M.P.H. appears in CMS Medicare data with 1,433 Part D claims and 1,108 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JINLENE CHAN, M.D., M.P.H.'s credentials?
JINLENE CHAN, M.D., M.P.H.'s NPI is 1194847624 with credentials M.D., M.P.H.. 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