Medicare Enrolled
Dr. Nathan Williams, M.D.
Obstetrics & Gynecology · Asheville, NC
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Low-engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Williams from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Williams
Dr. Nathan Williams is an obstetrics & gynecology specialist in Asheville, NC, with 20 years of NPI registration. Based on federal Medicare data, Dr. Williams performed 5,888 Medicare services across 1,477 unique beneficiaries.
Between the years covered by Open Payments, Dr. Williams received a total of $7,798 from 33 pharmaceutical and/or device companies across 369 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in obstetrics & gynecology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Williams is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 20 years in practice
▲ Top 0% volume in NC
$7,798 industry payments
Medicare Practice Summary
Medicare Utilization ↗5,888
Medicare services
Top 0% in NC for obstetrics & gynecology
1,477
Unique beneficiaries
$34
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~294 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Denosumab injection (Prolia/Xgeva) | 2,700 | $18 | $35 |
| Complete breast ultrasound, 1 breast A complete ultrasound examination of one breast to visualize internal structures. |
331 | $94 | $399 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
325 | $0 | $0 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
295 | $8 | $16 |
| Liver function blood test panel | 294 | $8 | $16 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
289 | $8 | $19 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
174 | $91 | $300 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
121 | $132 | $421 |
| Additional sequential IV infusion, 1 hour or less This code represents an additional intravenous infusion administered sequentially to a primary infusion. It covers the administration time of one hour or less. |
102 | $22 | $67 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
98 | $119 | $400 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
93 | $98 | $299 |
| Magnesium level test A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess. |
90 | $7 | $17 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
82 | $12 | $70 |
| Additional hour of intravenous hydration This code represents each additional hour of intravenous fluid administration beyond the initial hour. It is used to bill for extended hydration therapy. |
79 | $9 | $59 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
65 | $8 | $19 |
| Transvaginal pelvic ultrasound An ultrasound exam using a probe inserted into the vagina to image the uterus, ovaries, fallopian tubes, cervix, and surrounding pelvic structures. |
62 | $84 | $280 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
59 | $66 | $212 |
| Limited ultrasound of 1 breast A focused ultrasound examination of a single breast to evaluate specific areas of concern. |
58 | $27 | $206 |
| Normal saline infusion, 1000 cc Administration of 1000 cc of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater solution. |
50 | $2 | $7 |
| Intravenous infusion of new drug or substance, 1 hour or less This procedure involves administering a new medication or substance directly into a vein through an existing access site. The infusion is completed within one hour or less. |
48 | $49 | $148 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
47 | $21 | $65 |
| Unclassified drug A medication that does not fit into standard HCPCS or CPT classification categories. |
45 | $1 | $2 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
44 | $10 | $33 |
| Limited abdominal ultrasound A focused ultrasound examination of the abdomen to evaluate specific organs or areas. This procedure uses sound waves to create images of internal structures. |
37 | $52 | $198 |
| Ultrasound of head and neck blood flow, bilateral An ultrasound exam that uses sound waves to visualize and assess blood flow in the vessels of both the head and the neck. |
36 | $96 | $342 |
| New patient office visit, complex (60-74 min) | 35 | $158 | $516 |
| Normal saline infusion, 500 ml Administration of sterile normal saline solution through an intravenous line. This procedure involves the infusion of a 500 ml unit of the solution. |
26 | $1 | $6 |
| Ultrasound of abdominal aorta An imaging test that uses sound waves to create pictures of the abdominal aorta, the large blood vessel that carries blood from the heart to the lower body. |
24 | $102 | $249 |
| Ultrasound of head and neck soft tissue This procedure uses sound waves to create images of the soft tissues in the head and neck area. It allows for the visualization of structures beneath the skin without using radiation. |
23 | $67 | $251 |
| Breast biopsy with ultrasound-guided localization device placement This procedure involves taking a tissue sample from a breast growth and placing a marker device to locate it, guided by ultrasound imaging. |
20 | $372 | $1,176 |
| Complete ultrasound of abdomen A diagnostic imaging test that uses sound waves to create detailed pictures of the organs and structures within the abdomen. |
20 | $70 | $246 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in one arm or leg using compression and other maneuvers to assess blood flow and check for blockages. |
18 | $67 | $251 |
| Breast lesion localization with ultrasound guidance A device is placed in the breast to mark a specific growth using ultrasound guidance. This procedure helps identify the exact location of the lesion for further treatment or removal. |
16 | $283 | $867 |
| Intravenous infusion, 1 hour or less Administration of medication or fluid directly into a vein for therapeutic, preventive, or diagnostic purposes. The procedure lasts one hour or less. |
16 | $42 | $147 |
| Prolonged office E/M service, first 15 minutes This code is used for additional time spent by a physician beyond the maximum required time of a primary office or outpatient evaluation and management service. It is billed in 15-minute increments based on total time spent on the date of the primary service. |
15 | $25 | $76 |
| Ultrasound-guided fine needle aspiration biopsy, first lesion A biopsy procedure where a thin needle is used to collect tissue samples from a growth, guided by ultrasound imaging. This code applies to the first lesion or mass sampled during the session. |
14 | $78 | $318 |
| Deep underarm lymph node biopsy or removal A procedure to remove or sample deep lymph nodes located in the underarm area for examination. |
14 | $223 | $1,101 |
| Intraoperative lymph node imaging Imaging performed during surgery to visualize lymph nodes. |
12 | $109 | $343 |
| Partial removal of breast | 11 | $506 | $1,539 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
7.4% high complexity
65.9% medium
26.7% routine
Industry Payment Transparency
Open Payments through 2024 ↗$7,798
Total received (2018-2024)
Avg $1,114/year across 7 years
Top 6% in NC for obstetrics & gynecology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
33
Companies
369
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$6,178 (79.2%)
Other
Charitable contributions, space rental, and other categories
$1,620 (20.8%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$1,254
2023
$1,322
2022
$1,162
2021
$1,940
2020
$810
2019
$815
2018
$495
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Novartis Pharmaceuticals Corporation
$450
Daiichi Sankyo Inc.
$185
PFIZER INC.
$139
AstraZeneca Pharmaceuticals LP
$122
Lilly USA, LLC
$99
Dendreon Pharmaceuticals LLC
$80
Astellas Pharma US Inc
$40
Gilead Sciences, Inc.
$36
Merck Sharp & Dohme LLC
$29
Tempus AI, Inc
$20
Pharmacosmos Therapeutics Inc.
$20
Myriad Genetic Laboratories, Inc.
$17
PUMA BIOTECHNOLOGY, INC.
$16
Top 3 companies account for 61.7% of 2024 payments
All-time payments by company (2018-2024) ›
Novartis Pharmaceuticals Corporation
$2,298
PFIZER INC.
$907
Daiichi Sankyo Inc.
$580
Lilly USA, LLC
$482
AstraZeneca Pharmaceuticals LP
$466
Amgen Inc.
$305
Seagen Inc.
$256
GlaxoSmithKline, LLC.
$225
Organon LLC
$214
Tactile Systems Technology Inc
$213
Gilead Sciences, Inc.
$212
NOVARTIS PHARMACEUTICALS CORPORATION
$205
Merck Sharp & Dohme Corporation
$201
Clovis Oncology, Inc.
$174
Genentech USA, Inc.
$170
Myriad Genetic Laboratories, Inc.
$110
Merck Sharp & Dohme LLC
$99
PUMA BIOTECHNOLOGY, INC.
$95
TESARO, Inc.
$85
Dendreon Pharmaceuticals LLC
$80
Puma Biotechnology, Inc.
$74
Janssen Biotech, Inc.
$73
Eisai Inc.
$49
Astellas Pharma US Inc
$40
Kyowa Kirin, Inc.
$36
Stemline Therapeutics Inc.
$35
EISAI INC.
$20
Tempus AI, Inc
$20
Pharmacosmos Therapeutics Inc.
$20
Coherus Biosciences Inc.
$18
CashFlow Solutions, LLC
$14
Bayer HealthCare Pharmaceuticals Inc.
$13
Stryker Corporation
$11
Top 3 companies account for 48.5% of all-time payments
Associated products mentioned in payments ›
COSELA · ENHERTU · Enhertu · FLEXITOUCH · Flexitouch Plus · IBRANCE · IMBRUVICA · INJECTAFER · KANJINTI · KEYTRUDA · KISQALI · LYMPHA PRESS OPTIMAL PLUS(US) BT · LYNPARZA · Lenvima · MEKINIST · MYCHOICE CDX · MYRISK · NERLYNX · NEXPLANON · Nerlynx · Neulasta · ONTRUZANT · Orserdu · PIQRAY · PROVENGE · Perjeta · Phesgo · PreciseTumor · Rubraca · SANCUSO · SANDOSTATIN · SPY-PHI SYSTEM · TALZENNA · TUKYSA · Trodelvy · Udenyca · VERZENIO · VOTRIENT · Veozah · XGEVA · Xofigo · ZEJULA · myChoice CDx · myRisk
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (79%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians. Total industry engagement is in the top 6% for obstetrics & gynecology in NC.
Geographic Context
Obstetricians & gynecologists within 10 mi
87
Per 100K population
32.0
County median income
$70,578
Nearest hospital
MEMORIAL MISSION HOSPITAL AND ASHEVILLE SURGERY CE
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Williams is a mixed practice specialist, with above-average Medicare volume (top 0% in NC), with low-engagement industry engagement in the top 6% of NC peers, with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Williams experienced with denosumab injection (prolia/xgeva)?
Based on Medicare claims data, Dr. Williams performed 2,700 denosumab injection (prolia/xgeva) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Williams receive payments from pharmaceutical companies?
Yes. Dr. Williams received a total of $7,798 from 33 companies across 369 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Williams's costs compare to other obstetricians & gynecologists in Asheville?
Dr. Williams's average Medicare payment per service is $34. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Williams) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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