2026 NPPES data Emergency Medicine Physician NPI 1316979222 M.D.
Verify on CMS →

FRANK COMSTOCK, M.D.

Emergency Medicine Physician in TUCSON, Arizona. 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
781
Medicare Part D claims · 183 beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

FRANK COMSTOCK, M.D. filed 781 Medicare Part D claims in 2023 as a Emergency Medicine Physician in TUCSON, Arizona, prescribing 87% generic.

781
Part D claims, 2023
87%
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.

FRANK COMSTOCK, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

781 Top 29% higher than 71% 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%). This entry sits in this band. 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-eligible specialty (heuristic — not verified)

FRANK COMSTOCK, 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 FRANK COMSTOCK, M.D.?

Quality data not reported

NPI registry status

Active

Issued 07/07/2006

NPI 1316979222

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

781 122% vs specialty avg

2023 prescription claims

Specialty avg: 352

Specialty distribution in Arizona

How Emergency Medicine Physician compares to other specialties among Arizona providers

Arizona providers

Emergency Medicine Physician share within Arizona

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

Specialty board-certification context

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

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

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

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

FRANK COMSTOCK, M.D. appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding M.D. credentials at 6200 N LA CHOLLA BLVD, TUCSON, AZ, 85741, with a listed phone of (520) 469-8014. NPI 1316979222 was issued on 07/07/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what COMSTOCK 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 781 prescription claims written by this provider, covering 183 Medicare beneficiaries and totaling roughly $62K in drug spend, split 13% brand-name and 87% 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.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,398 enrolled providers across 56 states and an average of 352 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

6200 N LA CHOLLA BLVD
TUCSON, AZ 85741

Provider Details

NPI 1316979222
Specialty Emergency Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 07/07/2006

Brand vs generic prescribing mix · Typical

FRANK COMSTOCK, M.D. — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 781 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.

781
Total Claims
$62K
Total Drug Cost
183
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,805
Total Day Supply
53,248
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$32K
Generic Drug Cost
$29K

Patient Demographics

Average Patient Age
69.7 years
Avg HCC Risk Score
0.69
Gender Split
59% female / 41% male

Top Prescribed Drugs (Medicare Part D)

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

What FRANK COMSTOCK, 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
Testosterone Cypionate
212
Levothyroxine Sodium
97
Metformin Hcl Er
Metformin Hcl
63
Anastrozole
23
Liothyronine Sodium
18
Synthroid
Levothyroxine Sodium
16
Ozempic
Semaglutide
13
Estradiol
12
Lorazepam
11
Progesterone
"Progesterone
N/A

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

Emergency Medicine Physician Overview

How FRANK COMSTOCK, M.D. fits within the Emergency Medicine Physician landscape nationally.

64,398
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

FRANK COMSTOCK, M.D.'s 781 claims are above the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Arizona

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

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

Frequently Asked Questions

What is FRANK COMSTOCK, M.D.'s specialty?
FRANK COMSTOCK, M.D. specializes in Emergency Medicine Physician and practices in TUCSON, Arizona. Credentials: M.D..
How much does FRANK COMSTOCK, M.D. prescribe under Medicare Part D?
In 2023, FRANK COMSTOCK, M.D. wrote 781 Medicare Part D claims totaling $62K in drug costs for 183 beneficiaries.
Where is FRANK COMSTOCK, M.D. located?
FRANK COMSTOCK, M.D. is located at 6200 N LA CHOLLA BLVD, TUCSON, AZ, 85741. Phone: (520) 469-8014.
What is FRANK COMSTOCK, M.D.'s NPI number?
FRANK COMSTOCK, M.D.'s National Provider Identifier (NPI) is 1316979222, issued on 07/07/2006.
Does FRANK COMSTOCK, M.D. prescribe more brand-name or generic drugs?
FRANK COMSTOCK, M.D.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $32K in brand drug costs.
How many Emergency Medicine Physician providers are there in the US?
There are 64,398 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does FRANK COMSTOCK, M.D. prescribe most often?
Based on 2023 Medicare Part D data, FRANK COMSTOCK, M.D.'s most frequently prescribed drugs include Testosterone Cypionate, Levothyroxine Sodium, Metformin Hcl Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does FRANK COMSTOCK, M.D. accept Medicare?
FRANK COMSTOCK, M.D. appears in CMS Medicare data with 781 Part D claims and 183 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify FRANK COMSTOCK, M.D.'s credentials?
FRANK COMSTOCK, M.D.'s NPI is 1316979222 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