2026 NPPES data Adult Medicine Physician NPI 1730491317 M.D.
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STOYAN GRAKOV, M.D.

Adult Medicine Physician in CHATTANOOGA, Tennessee. 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
535
Medicare Part D claims · 237 beneficiaries · Adult Medicine Physician avg: 3K
What the federal data reveals: STOYAN GRAKOV, M.D. is a Adult Medicine Physician ([object Object]) practicing in CHATTANOOGA, Tennessee with a Medicare Part D prescribing footprint of 535 claims across 237 beneficiaries .

What stands out: STOYAN GRAKOV, M.D. filed 535 Medicare Part D claims in 2023 across CHATTANOOGA, Tennessee. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

STOYAN GRAKOV, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

STOYAN GRAKOV, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 07/12/2010

NPI 1730491317

Primary specialty

Adult Medicine Physician

Niche

2,481 US NPIs in this specialty

Medicare Part D claims

535 81% vs specialty avg

2023 prescription claims

Specialty avg: 2,807

Specialty distribution in Tennessee

How Adult Medicine Physician compares to other specialties among Tennessee providers

Tennessee providers

Adult Medicine Physician share within Tennessee

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

Specialty board-certification context

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

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

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

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

STOYAN GRAKOV, M.D. is a Adult Medicine Physician provider practicing in CHATTANOOGA, Tennessee, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1730491317. 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.

STOYAN GRAKOV, M.D. appears in the CMS NPPES registry as a Adult Medicine Physician provider holding M.D. credentials at 941 SPRING CREEK RD, CHATTANOOGA, TN, 37412, with a listed phone of (423) 855-3691. NPI 1730491317 was issued on 07/12/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GRAKOV 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 535 prescription claims written by this provider, covering 237 Medicare beneficiaries and totaling roughly $32K in drug spend. 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.

Adult Medicine Physician is a narrow specialty nationwide, with 2,481 enrolled providers across 52 states and an average of 2,807 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

941 SPRING CREEK RD
CHATTANOOGA, TN 37412

Provider Details

NPI 1730491317
Specialty Adult Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 07/12/2010

Hospital and facility affiliations

Facilities where STOYAN GRAKOV, 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.

HOSPITAL MEDICINE SERVICES OF TN LLC
NASHVILLE, TN
PEPPER BRANCH PHYSICIAN SERVICES PC
MCMINNVILLE, TN

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

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

535
Total Claims
$32K
Total Drug Cost
237
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
552
Total Day Supply
11,950
Generic Drug Cost
$7K
Antibiotic Claims
101

Patient Demographics

Average Patient Age
69.7 years
Avg HCC Risk Score
2.17
Gender Split
60% female / 40% male
Age Distribution
<65: 64, 65-74: 86, 75-84: 64, 85+: 23

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Cefuroxime
Cefuroxime Axetil
43
Amlodipine Besylate
29
Methylprednisolone
20
Spironolactone
20
Atorvastatin Calcium
18
Lisinopril
17
Losartan Potassium
17
Pantoprazole Sodium
15
Prednisone
15
Carvedilol
14

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

Adult Medicine Physician Overview

How STOYAN GRAKOV, M.D. fits within the Adult Medicine Physician landscape nationally.

2,481
Adult Medicine Physician Providers in US
52
States with Adult Medicine Physician
2,807
Avg Claims per Provider

STOYAN GRAKOV, M.D.'s 535 claims are below the specialty average of 2,807.

Nearby Adult Medicine Physician Providers in Tennessee

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

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

Frequently Asked Questions

What is STOYAN GRAKOV, M.D.'s specialty?
STOYAN GRAKOV, M.D. specializes in Adult Medicine Physician and practices in CHATTANOOGA, Tennessee. Credentials: M.D..
How much does STOYAN GRAKOV, M.D. prescribe under Medicare Part D?
In 2023, STOYAN GRAKOV, M.D. wrote 535 Medicare Part D claims totaling $32K in drug costs for 237 beneficiaries.
Where is STOYAN GRAKOV, M.D. located?
STOYAN GRAKOV, M.D. is located at 941 SPRING CREEK RD, CHATTANOOGA, TN, 37412. Phone: (423) 855-3691.
What is STOYAN GRAKOV, M.D.'s NPI number?
STOYAN GRAKOV, M.D.'s National Provider Identifier (NPI) is 1730491317, issued on 07/12/2010.
How many Adult Medicine Physician providers are there in the US?
There are 2,481 Adult Medicine Physician providers across 52 states in the US. The average Adult Medicine Physician provider writes 2,807 Medicare Part D claims per year.
What drugs does STOYAN GRAKOV, M.D. prescribe most often?
Based on 2023 Medicare Part D data, STOYAN GRAKOV, M.D.'s most frequently prescribed drugs include Cefuroxime, Amlodipine Besylate, Methylprednisolone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STOYAN GRAKOV, M.D. accept Medicare?
STOYAN GRAKOV, M.D. appears in CMS Medicare data with 535 Part D claims and 237 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STOYAN GRAKOV, M.D.'s credentials?
STOYAN GRAKOV, M.D.'s NPI is 1730491317 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