2026 NPPES data Specialist NPI 1730293028 M.D.
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DONALD DEXTER COBIAN, M.D.

Specialist in BAYAMON, Puerto Rico. 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 · 220 beneficiaries · Specialist avg: 1K
Generic prescribing
23%
generic claims · 77% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

DONALD DEXTER COBIAN, M.D. filed 1,278 Medicare Part D claims in 2023 as a Specialist in BAYAMON, Puerto Rico, prescribing 23% generic.

1K
Part D claims, 2023
23%
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.

DONALD DEXTER COBIAN, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

1,278 Top 22% higher than 78% 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%). This entry sits in this band. 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

What does the federal data show about DONALD DEXTER COBIAN, M.D.?

Quality data not reported

NPI registry status

Active

Issued 08/17/2006

NPI 1730293028

Primary specialty

Specialist

High-volume

69,658 US NPIs in this specialty

Medicare Part D claims

1,278 13% vs specialty avg

2023 prescription claims

Specialty avg: 1,474

Specialty distribution in Puerto Rico

How Specialist compares to other specialties among Puerto Rico providers

Puerto Rico providers

Specialist share within Puerto Rico

1. Specialist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Specialist share within Puerto Rico

Specialty board-certification context

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

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

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

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

DONALD DEXTER COBIAN, M.D. appears in the CMS NPPES registry as a Specialist provider holding M.D. credentials at TORRE SAN PABLO CALLE SANTA CRUZ, BAYAMON, PR, 00961, with a listed phone of (787) 798-4527. NPI 1730293028 was issued on 08/17/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DEXTER COBIAN 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 1,278 prescription claims written by this provider, covering 220 Medicare beneficiaries and totaling roughly $726K in drug spend, split 77% brand-name and 23% 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.

Specialist is a high-volume specialty nationwide, with 69,658 enrolled providers across 55 states and an average of 1,474 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

TORRE SAN PABLO CALLE SANTA CRUZ
BAYAMON, PR 00961

Provider Details

NPI 1730293028
Specialty Specialist
Credentials M.D.
Gender Male
NPI Issued 08/17/2006

Brand vs generic prescribing mix · Brand-heavy

DONALD DEXTER COBIAN, M.D. — brand share 77.0%
Specialty average (est.)

77% brand-name claims vs 23% generic, on 1,278 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.

1,278
Total Claims
$726K
Total Drug Cost
220
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,412
Total Day Supply
38,803
Brand vs Generic
77% brand / 23% generic
Brand Drug Cost
$687K
Generic Drug Cost
$39K

Patient Demographics

Average Patient Age
71.1 years
Avg HCC Risk Score
2.02
Gender Split
62% female / 38% male
Age Distribution
<65: 44, 65-74: 95, 75-84: 70, 85+: 11

Top Prescribed Drugs (Medicare Part D)

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

What DONALD DEXTER COBIAN, 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
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
302
Albuterol Sulfate Hfa
Albuterol Sulfate
290
Symbicort
Budesonide/Formoterol Fumarate
159
Breo Ellipta
Fluticasone/Vilanterol
137
Fluticasone Propionate
88
Budesonide-Formoterol Fumarate
Budesonide/Formoterol Fumarate
48
Anoro Ellipta
Umeclidinium Brm/Vilanterol Tr
39
Stiolto Respimat
Tiotropium Br/Olodaterol Hcl
35
Ofev
Nintedanib Esylate
24
Advair Diskus
Fluticasone Propion/Salmeterol
18

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

Specialist Overview

How DONALD DEXTER COBIAN, M.D. fits within the Specialist landscape nationally.

69,658
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider

DONALD DEXTER COBIAN, M.D.'s 1,278 claims are below the specialty average of 1,474.

Nearby Specialist Providers in Puerto Rico

Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as DEXTER COBIAN.

Compare Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is DONALD DEXTER COBIAN, M.D.'s specialty?
DONALD DEXTER COBIAN, M.D. specializes in Specialist and practices in BAYAMON, Puerto Rico. Credentials: M.D..
How much does DONALD DEXTER COBIAN, M.D. prescribe under Medicare Part D?
In 2023, DONALD DEXTER COBIAN, M.D. wrote 1,278 Medicare Part D claims totaling $726K in drug costs for 220 beneficiaries.
Where is DONALD DEXTER COBIAN, M.D. located?
DONALD DEXTER COBIAN, M.D. is located at TORRE SAN PABLO CALLE SANTA CRUZ, BAYAMON, PR, 00961. Phone: (787) 798-4527.
What is DONALD DEXTER COBIAN, M.D.'s NPI number?
DONALD DEXTER COBIAN, M.D.'s National Provider Identifier (NPI) is 1730293028, issued on 08/17/2006.
Does DONALD DEXTER COBIAN, M.D. prescribe more brand-name or generic drugs?
DONALD DEXTER COBIAN, M.D.'s prescribing is 77% brand-name and 23% generic drugs by claim count, with $687K in brand drug costs.
How many Specialist providers are there in the US?
There are 69,658 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does DONALD DEXTER COBIAN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, DONALD DEXTER COBIAN, M.D.'s most frequently prescribed drugs include Trelegy Ellipta, Albuterol Sulfate Hfa, Symbicort. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DONALD DEXTER COBIAN, M.D. accept Medicare?
DONALD DEXTER COBIAN, M.D. appears in CMS Medicare data with 1,278 Part D claims and 220 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DONALD DEXTER COBIAN, M.D.'s credentials?
DONALD DEXTER COBIAN, M.D.'s NPI is 1730293028 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